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: Physiology
Feilization takes place after how much time of ovulation ? 
Select and explain. 
A. 1-2 days, B. 5-6 days, C. 8-12 days, D. > 12 days
A: 1-2 days
Answer: A: 1-2 days 
Explanation: Ans. is 'a' i.e., 1-2 days