This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Amputations and Spos Injury, Subject name: Orthopaedics
[{'content': 'Posterior cruciate ligament--true statement is: \nSelect and explain. \nA. Attached to the lateral femoral condyle, B. Intrasynol, C. Prevents posterior dislocation of tibia, D. Relaxed in full flexion', 'role': 'user'}, {'content': 'Answer: C \nExplanation: PCL prevents posterior gliding (subluxation) of tibia over femur. PCL (stouter ligamentous structure) PCL tests : Posterior drawer test Reverse pivot shift test Quadriceps active test', 'role': 'assistant'}]