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
[{'content': 'Reversible pulpits is \nSelect and explain. \nA. Aggravated by heat and relieved by cold, B. Aggravated by cold and relieved by heat, C. No reaction to hot and cold, D. Reacts to electric pulp tester', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]