According to the two-cell mechanism of follicular estrogen synthesis:
A. granulosa cells synthesize an androgen, which the theca cells convert to estrogen.
B. Sertoli cells synthesize an androgen, which the granulosa cells convert to dihydrotestosterone.
C. theca cells synthesize an androgen, which luteal cells convert to estrogen.
D. production of progesterone by the corpus luteum requires cooperative interaction between two cell types.
E. theca cells synthesize an androgen, which the granulosa cells convert to estrogen.
E
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