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 indications of cast metal inlay are all except 
Select and explain. 
A. The cavity’s width exceeds ⅓ the intercuspal distance, B. Strong, self-resistant cusps present, C. Occlusal surfaces are not to be changed, D. The tooth is not to be used as an abutment
A: The cavity’s width exceeds ⅓ the intercuspal distance
Answer: A: The cavity’s width exceeds ⅓ the intercuspal distance 
Explanation: Inlays

An inlay can be defined as a restoration which has been constructed out of mouth from gold, porcelain or other materials and then cemented into the prepared cavity of a tooth.

Indications

The cavity's width does not exceed one-third the intercuspal distance.
Strong, self-resistant cusps are there.
Minimum or no occlusal facets  present and if present, are confined to the occlusal surfaces only.
The tooth is not to be used as an abutment for a fixed or removable prosthesis.
Occlusal or occluding surfaces are not to be changed by the restorative procedure.

MDS Prep Bytes (Cast Restoration – Inlay)