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': '50yr old male presented with the following ECG pattern. Which drug not to be given for his condition? \nSelect and explain. \nA. Atropine, B. Propronolol, C. Prazosin, D. Epinephrine', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The given ECG shows bradycardia, beta blockers are contraindicated in bradycardiaRef: HL Sharma; 7th ed. Pg 191', 'role': 'assistant'}]