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
[{'content': 'Lateral dislocation of patella is prevented by ? \nSelect and explain. \nA. Rectus femoris, B. Vastus intermedius, C. Vastus lateralis, D. Vastus medialis', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Vastus medialis', 'role': 'assistant'}]