单选题:成熟卵泡分泌大量雌激素是由于(  )

题目内容:
成熟卵泡分泌大量雌激素是由于(  )
A.黄体生成素的作用
B.在LH协同下卵泡刺激素的作用
C.绒毛膜促性腺激素的作用
D.雌激素的作用
E.孕激素的作用
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