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: Unknown
[{'content': 'Muscle in extension compartment of forearm which causes flexion of elbow - \nSelect and explain. \nA. Brachioradialis, B. Abductor pollicis longus, C. Extensor pollicis longus, D. Extensor carpi radialis longus', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans: A', 'role': 'assistant'}]