This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
[{'content': 'Spermatogonia divide by which cell division? \nSelect and explain. \nA. Meiosis, B. Mitosis, C. Both meiosis and mitosis, D. Maturation', 'role': 'user'}, {'content': "Answer: B \nExplanation: There are three types of spermatogonia in humans Type A ( dark) cells which are reserve spermatogonial stem cells which do not usually undergo active mitosis Type A ( pale) cells which are spermatogonia stem cells that undergo active mitosis to produce type B cells Ref: Gray's 39e/p-210-220", 'role': 'assistant'}]