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: Surgery
[{'content': 'Injury to the medial meniscus is rather impossible when the knee joint does not \nSelect and explain. \nA. Extend, B. Flex, C. Rotate, D. All', 'role': 'user'}, {'content': 'Answer: C \nExplanation: C i.e. Rotate', 'role': 'assistant'}]