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: Orthopaedics
[{'content': 'For Tendon transfer, the most common tendon used \nSelect and explain. \nA. Achillis tendon, B. Palmaris longus, C. Flexor carpi ulnaris, D. Tibialis posterior', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]