This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Autonomic nervous system, Subject name: Pharmacology
[{'content': 'Propranolol is contraindicated in diabetes mellitus because it \nSelect and explain. \nA. Causes hyperglycemia, B. uses seizures, C. Masks the hypoglycemic symptoms, D. Causes hypotension', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ref; KD Tripathi pharmacology 7th edition (page no; 146) Propranolol delays recovery from hypoglycemia due to insulin and oral antidiabetics. It masks the warning signs of hypoglycaemia mediated through sympathetic stimulation (tachycardia, tremor).', 'role': 'assistant'}]