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
In preparing a primary molar for a stainless steel crown,
the surface requiring the least amount of reduction is 
Select and explain. 
A. Occlusal, B. Lingual, C. Mesial, D. Facial
B: Lingual
Answer: B: Lingual 
Explanation: None