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: Anatomy
Lateral dislocation of patella is prevented by ? 
Select and explain. 
A. Rectus femoris, B. Vastus intermedius, C. Vastus lateralis, D. Vastus medialis
D: Vastus medialis
Answer: D: Vastus medialis 
Explanation: Vastus medialis