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
Which one of the following is not seen in the acute irreverisible pulpitis: 
Select and explain. 
A. Pain disappears on removal of stimulus, B. Pain persists on removal of stimulus, C. Increased threshold for stimulus, D. Severe pain
A: Pain disappears on removal of stimulus
Answer: A: Pain disappears on removal of stimulus 
Explanation: None