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: Physiology
[{'content': 'In oogenesis, first meiotic division completes ? \nSelect and explain. \nA. After ovulation, B. Before ovulation, C. During ovulation, D. At feilization', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Before ovulation", 'role': 'assistant'}]