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': 'Subgingival temperature is lower in \nSelect and explain. \nA. Smokers than nonsmokers, B. Acute gingivitis than chronic gingivitis, C. Periodontosis than periodontitis, D. None of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]