1000 CR test 11, #5

[isisalaska]

In 1985 the city’s Fine Arts Museum sold 30,000 single-entry tickets. In 1986 the city’s Folk Arts and Interior Design museums opened, and these three museums together sold over 80,000 such tickets that year. These museums were worth the cost, since more than twice as many citizens are now enjoying the arts.
Which of the following, if true, most seriously weakens the author’s assertion that more than twice as many citizens are now enjoying the arts?
(A) Most visitors to one museum also visit the other two.
(B) The cost of building the museums will not be covered by revenues generated by the sale of museum tickets.
(C) As the two new museums become better known, even more citizens will visit them.
(D) The city’s Fine Arts Museum did not experience a decrease in single-entry tickets sold in 1986.
(E) Fewer museum entry tickets were sold in 1986 than the museum planners had hoped to sell.

why is A? to me this will strength the argument since people are going to Arts museums?

[800GMAT]

If the same group of 30,000 people is visiting all the three museums, then although the number of tickets sold is high, no new interest in arts is generated. And therefore, one cannot assert that twice as many citizens are enjoying the arts. 'A' implies that since the same group is circulating, no new interest is created and is, hence, the right answer.

[isisalaska]

makes sense now. Thanks

[800GMAT]

You are welcome.
Good Luck!

[john83.amar]

I'm going with A. No confidence on my answer.