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': 'Therapeutic uses of progesterone are all except \nSelect and explain. \nA. Postponement of menstruation, B. Post - coital pill, C. Breast tumor, D. Abnormal uterine bleeding', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Progesterone is contraindicated in breast tumor.', 'role': 'assistant'}]