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': 'Transtuzumab is targeted against? \nSelect and explain. \nA. Her 2 neu, B. CD 20, C. EGFR, D. VEGF', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Her 2 neu", 'role': 'assistant'}]