This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Physiology
[{'content': 'All are actions of depolarising agents except \nSelect and explain. \nA. Bradycardia, B. Hypokalemia, C. Increased Intracranial tension, D. Increased Intraocular pressure', 'role': 'user'}, {'content': 'Answer: B \nExplanation: They causes hyperkalemia, and if hyperkalemia is already present depolarizing agents are a contraindication.', 'role': 'assistant'}]