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: Anaesthesia
[{'content': 'Regarding the use of halothane in obsteric surgery,which is true – \nSelect and explain. \nA. There is increased risk of PPH, B. It has no effect on uterine musculature, C. Best used in caesarean section, D. None is true', 'role': 'user'}, {'content': 'Answer: A \nExplanation: As halothane causes uterine relaxation, post-partum hemorrhage can occur.', 'role': 'assistant'}]