Definition: You are given a question on human aging. You are also given 4 answer options (associated with "A", "B", "C", "D"), out of which only one is correct. You need to answer the question by selecting the correct option. You should only answer with the choice letter, not the whole answer.
Input: Which of the following is more likely to be a cohort, rather than an age, difference?
(A)A higher proportion of older women have completed menopause (B)A smaller proportion of older women report dreams about sex (C)A higher proportion of older men are bald (D)A higher proportion of older men and women are victims of cancer

B