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 reverse three quarter crown with complete coverage of the facial surface is used for: 
Select and explain. 
A. Mandibular molars with severe lingual inclination, B. Molars with destructed facial surface, but intact lingual surface, C. Both, D. None
C: Both
Answer: C: Both 
Explanation: The reverse three-quarter crown, with complete coverage of the facial surface, is used only occasionally and is usually reserved for one or two situations:

It is ideal for restoration of mandibular molars that are severely inclined lingually, and
It can also be used on molars that have suﬀered destruction of the facial surface, but not of the  lingual.