Critical Reasoning

Of those person who became teachers in 1968 and who later left the profession, 30 percent today earn salaries above $35,000 a year: of those who became teachers in 1968 and have remained in the profession, only 15 percent today earn salaries above $35,000 a year. These figures indicate how underpaid teachers are today.
The argument above depends on which of the following assumptions about the persons for whom statistics are cited?
(A) At least one-third of the group of persons who have remained in teaching would today be earning more than $35,000 a year if they had left teaching.
(B) The group of persons who left teaching and the group who did not are comparable in terms of factors that determine how much people outside the teaching profession are paid.
(C) Most of those persons who left teaching did so entirely because of the low salaries teachers earn.
(D) As a group, those persons who have remained in teaching are abler and more dedicated than the group of persons who left teaching.
(E) The group of persons who left teaching and who today earn more than $35,000 a year were more capable teachers than the group who remained in the profession.

IMO:C

Because they left profession because of low salary...that why we can conclude now that teachers are not underpaid.

IMO B

(A) At least one-third of the group of persons who have remained in teaching would today be earning more than $35,000 a year if they had left teaching.<- It is aprediction rather than assumption..

(B) The group of persons who left teaching and the group who did not are comparable in terms of factors that determine how much people outside the teaching profession are paid.<- Correct , if two groups are not comparable then no conclusion can be made.. thus CORRECT...

(C) Most of those persons who left teaching did so entirely because of the low salaries teachers earn. <- No support for this assumption

(D) As a group, those persons who have remained in teaching are abler and more dedicated than the group of persons who left teaching.<- No support for this assumption
(E) The group of persons who left teaching and who today earn more than $35,000 a year were more capable teachers than the group who remained in the profession.<- No support in passage for this assumption

Should be 'B' argument assumes that both the groups are comparable in terms of salaries and draws a conclusion that teachers are underpaid.

OA plz...

the arguement about statistic number is based normally on representativeness or simple mathamatics. in this case, it is based on representativeness of evidence. B is correct.

Go with B as well, C cannot be correct since it is nowhere mentioned that teachers left because of the low salary, there could be other reasons.

B-not correct b/c group of persons who left the teaching profession is not equal/much fewer to group of persons who are outside the teaching profession.
C-correct b/c it points out one reason why a group of teachers left their profession.

Why A is wrong?

IMO B.
I am surprised why no OA after this much discussion

Sorry for posting OA after long time

OA is B

I'm going with B. No confidence on my answer. Can anyone tell OA?