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
Hot teeth refers to: 
Select and explain. 
A. Temperature of the tooth increases due to pulpitis., B. Difficult to anasthesize., C. Both of the above, D. Periapical abscess increases the temperature of the involved tooth.
B: Difficult to anasthesize.
Answer: B: Difficult to anasthesize. 
Explanation: None