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
An incomplete tear of a ligament or a complex of ligaments around a joint is known as: 
Select and explain. 
A. Dislocation, B. Subluxation., C. Sprain., D. Strain.
C: Sprain.
Answer: C: Sprain. 
Explanation: None