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
During cavity preparation, more incidence of exposure is in 
Select and explain. 
A. Class V cavity in first premolar, B. Class II mesio occlusal cavity, C. Class II disto occlusal cavity, D. Class IV cavity
A: Class V cavity in first premolar
Answer: A: Class V cavity in first premolar 
Explanation: None