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: Pharmacology
[{'content': 'Which of the following is not a cardioselective beta blocker: \nSelect and explain. \nA. Acebutol, B. Atenolol, C. Pindolol, D. Metoprolol', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Pindolol', 'role': 'assistant'}]