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
A young adult shows non-fluctuant, tender and red swellingin the marginal gingival lesion. This is most likely: 
Select and explain. 
A. Periodontal abscess, B. Periapical abscess, C. Gingival abscess, D. Periapical sinus
C: Gingival abscess
Answer: C: Gingival abscess 
Explanation: None