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
Average reproductive life span of ovum is? 
Select and explain. 
A. 6-12 hrs, B. 12-24 hrs, C. 24-36 hrs, D. 3 days
B: 12-24 hrs
Answer: B: 12-24 hrs 
Explanation: Ans. is 'b' i.e.,12-24 hrsReproductive life of ovum - 24 hours (12 - 24 hours)Reproductive life of sperm - 24 - 72 hours