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
False vitality results are common in posterior tooth are most commonly due to 
Select and explain. 
A. Presence of vital pulp tissue in one of the canals, B. Thickness of the enamel, C. Presence of pulp stones, D. Thickness of dentine
A: Presence of vital pulp tissue in one of the canals
Answer: A: Presence of vital pulp tissue in one of the canals 
Explanation: None