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': 'Which of the following drug may be used to arrest premature labour : \nSelect and explain. \nA. Diazoxide, B. Methyl dopa, C. Magnesium sulphate, D. All', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. is a and b but c > d i.e. Magnesium sulphate and Diazoxide', 'role': 'assistant'}]