This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Orthopaedics
[{'content': 'Extensor Carpi radialis Longus is \nSelect and explain. \nA. Extensor and ulnar detor of the wrist, B. Extensor and radial Detor of the wrist, C. Injured in Posterior interosseus nerve injury, D. Weak extensor of the wrist', 'role': 'user'}, {'content': "Answer: B \nExplanation: Extensor carpi radialis Longus is a primary extensor and radial detor of the wristIt is supplied by the radial nerve and not the PINLoss of function cause wrist drop(Refer: Mohindra's Fundamentals of Ohopedics, 2nd edition, pg no. 235, 266)", 'role': 'assistant'}]