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: Dental
Which of the following is best suited to diagnose acute apical periodontitis 
Select and explain. 
A. Percussion, B. Thermal tests, C. Electric pulp tests, D. Anaesthetic test
A: Percussion
Answer: A: Percussion 
Explanation: None