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': 'Hysteroscopy should be done in \nSelect and explain. \nA. Secretory phase, B. Immediate post menstrual phase, C. Pre-ovulatory phase, D. Menstrual phase', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Hysteroscopy should be done in Pre-ovulatory phase when the endometrium is thin and bleeding is less likely to occur.', 'role': 'assistant'}]