题目内容（请给出正确答案）

[主观题]

Which is a TRUE statement about events occurring in the menstrual cycle？

A、Each peak in estrogen concentration is accompanied by an even greater peak in progesterone concentration

B、FSH reaches its highest concentration 3 days before menstruation begins.

C、Progesterone is low during the first half of the cycle, and rises to a peak during the second half.

D、Ovulation occurs exactly in the middle of the follicular phase of the cycle.

E、The corpus luteum normally degenerates on day 14 of the cycle

提问人：网友lcg040621 发布时间：2022-01-07

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