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
A stainless steel crown should normally extend below
the gingival crest approximately: 
Select and explain. 
A. 1 mm, B. 1.5 rnm, C. 2 mm, D. 2.5 mrn
A: 1 mm
Answer: A: 1 mm 
Explanation: None