This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Reproductive physiology and hormones in females, Subject name: Gynaecology & Obstetrics
Which of the following is seen at the time of ovulation? 
Select and explain. 
A. completion of first meiotic division of oocyte, B. Inhibin A is increased, C. FSH increases steroid synthesis in granulosa cells, D. Activin causes FSH to act on granulosa cells
A: completion of first meiotic division of oocyte
Answer: A: completion of first meiotic division of oocyte 
Explanation: Ovulation The combined LH/FSH midcycle surge is responsible for the final stage of maturation of the follicle, completion of the first meiotic division of oocyte with extrusion of first polar body and expulsion of oocyte Ref: D.C. Dutta's Textbook of Gynaecology, 6th edition, page no: 93