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
For selection of stainless steel crown, which of the following is not the criterion? 
Select and explain. 
A. Mesial distal diameter, B. Light resistance during seating, C. Occlusal morphology, D. Crown height
C: Occlusal morphology
Answer: C: Occlusal morphology 
Explanation: Three main considerations have to taken care while selecting SS crown for pedo patients:

Mesial distal diameter
Light resistance during seating
Crown height

Before preparation, use Boley's gauge. After preparation, trial and error method should be followed.
Smallest crown is selected. Friction should be felt, when crown is slipped gingivally.