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
The corpus luteum of menstruation presents for: 
Select and explain. 
A. 5 days, B. 10 days, C. 14 days, D. 30 days
C: 14 days
Answer: C: 14 days 
Explanation: 14 days