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
Type of injury causing more damage to semilunar cartilage of knee 
Select and explain. 
A. Flexion of knee, B. Extension of knee, C. Rotation of flexed knee, D. Rotation of extended knee
C: Rotation of flexed knee
Answer: C: Rotation of flexed knee 
Explanation: None