This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Introduction and gametogenesis., Subject name: Anatomy
[{'content': 'Feilization can occur within how many hours after ovulation? \nSelect and explain. \nA. 24, B. 12, C. 36, D. 48', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Window period for feilization Feilization should occur within 24 hrs after ovulation. Life span of ovum - 24 hrs Sperms are capable of feilization for 48 hrs after ejaculation Sperms survival time in female is 5-10 days', 'role': 'assistant'}]