This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Gynaecology & Obstetrics
[{'content': 'Which of the following is seen in the ovulatory phase \nSelect and explain. \nA. Inhibin A is increased, B. FSH increases steroid synthesis in granulosa cells, C. Stimulation of continuation of reduction division of oocytes, D. Activin causes FSH to act on granulosa cells', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ovulation\n\nThe combined LH/FSH midcycle surge is responsible for the final stage of maturation of the follicle,\ncompletion of the first meiotic division of oocyte with extrusion of first polar body and expulsion of oocyte', 'role': 'assistant'}]