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': 'Type of injury causing more damage to semilunar cartilage of knee \nSelect and explain. \nA. Flexion of knee, B. Extension of knee, C. Rotation of flexed knee, D. Rotation of extended knee', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]