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: Anatomy
[{'content': 'Supination in flexed elbow is produced by ? \nSelect and explain. \nA. Supinator, B. Biceps, C. Coracobrachialis, D. Brachialis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. B. Biceps', 'role': 'assistant'}]