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 ovulatory period corresponds to : 
Select and explain. 
A. 14 days before menstruation, B. The day of menstruation, C. Increase in basal temperature, D. 14 days atter menstruation
A: 14 days before menstruation
Answer: A: 14 days before menstruation 
Explanation: 14 days before menstruation