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
Pulp cavity tests are used to check? 
Select and explain. 
A. Pulp blood supply, B. Afferent nerve fibers, C. Efferent nerve fibers, D. None
B: Afferent nerve fibers
Answer: B: Afferent nerve fibers 
Explanation: None