how to choose correct OA?

[NSNguyen]

Taken together, some 2,000 stocks recommended on a popular television show over the course of the past 12 years by the show’s guests, most of whom are successful consultants for multibillion-dollar stock portfolios, performed less successfully than the market as a whole for this 12-year period. So clearly, no one should ever follow any recommendation by these so-called experts.
Each of the following, if true, weakens the argument EXCEPT:
(A) Taken together, the stocks recommended on the television show performed better than the market as a whole for the past year.
(B) Taken together, the stocks recommended on the television show performed better for the past 12-year period than stock portfolios that were actually selected by any other means.
(C) Performance of the stocks recommended on the television show was measured by stock dividends, whereas the performance of the market as a whole was measured by change in share value.
(D) Performance of the stocks recommended on the television show was measured independently by a number of analysts, and the results of the all the measurements concurred.
(E) The stock portfolios for which the guests were consultants performed better for the past 12-year period than the market as a whole.

[nitin86]

Taken together, some 2,000 stocks recommended on a popular television show over the course of the past 12 years by the show’s guests, most of whom are successful consultants for multibillion-dollar stock portfolios, performed less successfully than the market as a whole for this 12-year period. So clearly, no one should ever follow any recommendation by these so-called experts.
Each of the following, if true, weakens the argument EXCEPT:
(A) Taken together, the stocks recommended on the television show performed better than the market as a whole for the past year.
(B) Taken together, the stocks recommended on the television show performed better for the past 12-year period than stock portfolios that were actually selected by any other means.
(C) Performance of the stocks recommended on the television show was measured by stock dividends, whereas the performance of the market as a whole was measured by change in share value.
(D) Performance of the stocks recommended on the television show was measured independently by a number of analysts, and the results of the all the measurements concurred.
(E) The stock portfolios for which the guests were consultants performed better for the past 12-year period than the market as a whole.

IMO - D

As it approves the assumption, that the measurements for compairing the stocks and the market were indeed correct

For other options, they all weaken this assumption

[pinktiger]

I pick D.

Torn between c and d though. But D seems neutral and doesn't weaken the argument.

Any body why C is incorrect?

[lvincy]

I will also go for D.
Argument is Guest are experts and D supports it.
Results of number of others analysts matched with what experts have recommended.

C puts doubt on measurement scale or evidence not on the experts.
D is more strong as compared to C.

[imandang]

I pick D.

Torn between c and d though. But D seems neutral and doesn't weaken the argument.

Any body why C is incorrect?

stock dividend will increase the total quantity of shares not the value of shares..that will make the value for each share decrease..Doesn't mean the stock performance is bad..
D for sure..

[senthil]

I m confused between D and E .. Yes D is neutral ... E says that experts recommendation on stock portfolios were accurate there by resluted in profit ....
am I wrong ?

[albertrahul]

I would actually go for C.

This statement statest that comparison was biased in favor of performance of the stocks recommended on the television show. So this actually strengthens the conclusion that no one should ever follow any recommendation by these so-called experts.

[niraj_a]

looks like D to me since it's seems kinda out of scope

[albertrahul]

Can we have OA for this question please?

[NSNguyen]

OA: D

[khanshainur]

I agree with you guys! I think it's D