This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Radial Nerve Injury, Subject name: Orthopaedics
[{'content': 'Extensor Carpi Radialis Longus is - \nSelect and explain. \nA. Extensor and ulnar deviator of the wrist, B. Extensor and radial De viator of the wrist, C. Injured in Posterior interosseus nerve injury, D. Weak extensor of the wrist', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Extensor and radial Deviator of the wrist o Extensor carpi Radialis Longus is a primary extensor and radial deviator of the wrist o It is supplied by the radial nerve and not the PIN o Loss of function causes wrist drop", 'role': 'assistant'}]