This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Pharmacology
[{'content': 'All of the following can be administered in acute highpeension during labour except \nSelect and explain. \nA. IV labetalol, B. IV nitroprusside, C. IV hydralazine, D. IV esmolol', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ref - KDT7/e p572 Sodium nitroprusside is contra indicated in eslampsia', 'role': 'assistant'}]