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': 'HSG is done : \nSelect and explain. \nA. Between menstruation and ovulation, B. Just after menstruation.__, C. Just before ovulation, D. At any time', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Between menstruation and ovulation', 'role': 'assistant'}]