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
Maximum function of corpus luteum occurs : 
Select and explain. 
A. At ovulation, B. Before ovulation, C. 3 days after ovulation, D. 9 days after ovulation
D: 9 days after ovulation
Answer: D: 9 days after ovulation 
Explanation: 9 days after ovulation