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
[{'content': "Best diagnostic procedure for ant. Cruciate ligament injury is \nSelect and explain. \nA. Lachman's test, B. Pivot shift test, C. Anterior drawer test, D. Mc Murray's test", 'role': 'user'}, {'content': "Answer: A \nExplanation: A i.e. Lachman's test", 'role': 'assistant'}]