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
[{'content': 'Average reproductive life span of ovum is? \nSelect and explain. \nA. 6-12 hrs, B. 12-24 hrs, C. 24-36 hrs, D. 3 days', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e.,12-24 hrsReproductive life of ovum - 24 hours (12 - 24 hours)Reproductive life of sperm - 24 - 72 hours", 'role': 'assistant'}]