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
Diameter of graafian follicle at the time of ovulation is - 
Select and explain. 
A. 10mm, B. 15mm, C. 20mm, D. 25mm
C: 20mm
Answer: C: 20mm 
Explanation: Ans. C. 20mmOvulation is aprocessby which a secondary oocyte is released from the ovaryfollowingrupture of a mature Graafian follicle and becomes available for conception.There is a pre - ovulatory enlargement in the Graafian follicle and it measures about 20 mm at the time of ovulation.