This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Child Psychiatry, Subject name: Psychiatry
[{'content': 'Methylphenindate is drug of choice for \nSelect and explain. \nA. Obsessive compulsive disorder, B. ADHD (attention deficit hypersensitivity disorder), C. Enuresis, D. Autism', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. b (ADHD). (Ref. Pharmacology by KD Tripathi 5th/- 436; Harrison 18th/27, 369)Drugs used for ADHD# Methylphenidate# Amphetamine# PimolineMethylphenidate acts by releasing NA & dopamine in brain. It is preferred because it causes less tachycardia & growth retardation.', 'role': 'assistant'}]