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
The control teeth used during pulp testing are 
Select and explain. 
A. Adjacent and opposing teeth, B. Adjacent and contra lateral teeth, C. Suspected tooth only, D. Adjacent teeth only
B: Adjacent and contra lateral teeth
Answer: B: Adjacent and contra lateral teeth 
Explanation: None