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': 'In which of the following transition meiosis occurs? \nSelect and explain. \nA. Primary to secondary spermatocyte, B. Second spermatocyte to globular spermatid, C. Germ cells to spermatogonium, D. Spermatogonium to primary spermatocyte', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]