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
The term gingival ablation indicates 
Select and explain. 
A. Gingival recession due to faulty tooth brushing, B. Gingival recession accentuated by prominent palatal root, C. Gingival recession due to friction from hard food, D. Gingival recession due to friction from soft tissue
D: Gingival recession due to friction from soft tissue
Answer: D: Gingival recession due to friction from soft tissue 
Explanation: None