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
Sperm remains in epididymis for ______ hours? 
Select and explain. 
A. 24, B. 48, C. 72, D. 96
A: 24
Answer: A: 24 
Explanation: - 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