This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Physiology & Histology, Subject name: Gynaecology & Obstetrics
[{'content': 'Following are the features of inhibin except \nSelect and explain. \nA. Non-steroidal water-soluble protein, B. Secreted by Graafian follicle, C. Stimulates FSH secretion, D. Increased secretion of inhibin occurs in polycystic ovarian disease', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. is c, i.e. Stimulates FSH secretionRef: Shaw 15th/ed, p45; Dutta Gynae 5th/ed, p72; Leon Speroff 7th/ed, p197, 8th/ed, p212,213,172Inhibin:* Inhibin is a non-steroidal water soluble protein.Q* It is secreted by Graffian follicle.Q* It is of two types - Inhibin A and B. In the early and midfollicular phase Inhibin B is the predominant form secreted whereas Inhibin A begins to rise in late filicular phase to reach a peak in mid luteal phase.Inhibin suppresses FSH secretion and not LH* In PCOS inhibin secretion increases.Q', 'role': 'assistant'}]