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 act on both Her-1 and Her-2 receptors - \nSelect and explain. \nA. Imatinib, B. Erlotinib, C. Lapatinib, D. Gefitinib', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Lapatinib", 'role': 'assistant'}]