This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immunomodulator, Subject name: Pharmacology
[{'content': 'Drug causing cardiomyopathy - \nSelect and explain. \nA. Chloroquine, B. Trastuzumab, C. Methotrexate, D. Pemetrexed', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Trastuzumab o Important drugs causing cardiomyopathy (espcially dilated cardiomyopathy) are:i) Cocaineii) Amphetamineiii) Doxorobicin (Anthracycline)iv) Trastuzumab (Herceptin)", 'role': 'assistant'}]