This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Normal Menstruation, Abnormal Menstruation, Menopausal Physiology and forsight of conception, Subject name: Gynaecology & Obstetrics
[{'content': 'Serum inhibin B is secreted by ovarian granulosa cells staing at:- \nSelect and explain. \nA. Primordial follicle stage, B. Preantral follicle stage, C. Early antral stage, D. Pre ovulatory stage', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Serum inhibin B is secreted by ovarian granulosa cells staing at the preantral follicle stage and therefore reflects the size of the growing follicular coho . Reduced inhibin B levels are seen with aging even in normal feile women . Inhibin B alone has poor predictive value for ovarian response but improves the predictive value when added to the CCCT (chlomiphene citrate challenge test)', 'role': 'assistant'}]