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
Anesthetic testing is most effective in localizing pain 
Select and explain. 
A. to a specific tooth., B. to the mandible or maxilla., C. across the midline of the face., D. to a posterior tooth.
B: to the mandible or maxilla.
Answer: B: to the mandible or maxilla. 
Explanation: None