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
Best diagnostic procedure for ant. Cruciate ligament injury is 
Select and explain. 
A. Lachman's test, B. Pivot shift test, C. Anterior drawer test, D. Mc Murray's test
A: Lachman's test
Answer: A: Lachman's test 
Explanation: A i.e. Lachman's test