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
Localized diffuse gingivitis extends from 
Select and explain. 
A. the interdental papillae to attached gingiva in a limited area, B. the margin to attached gingiva in a limited area, C. the interdental papillae to mucobuccal fold in a limited area, D. the margin to the mucobuccal fold in a limited area
D: the margin to the mucobuccal fold in a limited area
Answer: D: the margin to the mucobuccal fold in a limited area 
Explanation: None