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': 'All of the following are seen in a patient who has the habit of smoking EXCEPT \nSelect and explain. \nA. Increased pocket depth, B. Attachment loss, C. Increased gingival bleeding on probing, D. All of the above', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]