This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: The Ovarian Cycle, Subject name: Gynaecology & Obstetrics
[{'content': 'Secondary oocyte contains - \nSelect and explain. \nA. 23, X, B. 46, XY, C. 46, XX, D. 23, Y', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a'i.e., 23, X o OOGENESIS:", 'role': 'assistant'}]