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
All of the following are true regarding Class-II inlay gingival margins preparation except? 
Select and explain. 
A. Removal of week enamel rods, B. Increased metal burnishability, C. Lap sliding fit of metal margin, D. Margins of restoration in self-cleansable area
D: Margins of restoration in self-cleansable area
Answer: D: Margins of restoration in self-cleansable area 
Explanation: None