This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: FMGE 2018, Subject name: Physiology
[{'content': 'Sperm remains in epididymis for ______ hours? \nSelect and explain. \nA. 24, B. 48, C. 72, D. 96', 'role': 'user'}, {'content': 'Answer: A \nExplanation: - Sperms after forming in seminiferous tubules enter epididymis - Sperms in seminiferous tubules & early poions of epididymis => non-motile & cannot feilize ovum - After sperm had been for (18-24 hrs) in epididymis, sperms attain capability of motility', 'role': 'assistant'}]