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': 'The gingival crevicular fluid is increased in all except: \nSelect and explain. \nA. Gingivitis, B. Smoking, C. Periodontal pocket, D. Trauma from occlusion', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]