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': 'Cardiomyopathy is caused by which monoclonal antibody? \nSelect and explain. \nA. Trastuzumab, B. Infliximab, C. Eternacept, D. Adalimumab', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Trastuzumab o Trastuzumab, a HER2/neu receptor blocker and is used in breast carcinoma causes dilated cardiomyopathy.", 'role': 'assistant'}]