This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
[{'content': 'Drug of choice for ADHD is \nSelect and explain. \nA. Methylphenidate, B. Modafinil, C. Amitriptyline, D. Adrenaline', 'role': 'user'}, {'content': 'Answer: A \nExplanation: .', 'role': 'assistant'}]