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': 'An incomplete tear of a ligament or a complex of ligaments around a joint is known as: \nSelect and explain. \nA. Dislocation, B. Subluxation., C. Sprain., D. Strain.', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]