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
Contraindication of band and Loop space maintainer are all except 
Select and explain. 
A. High caries susceptibility, B. Single tooth missing in posterior region, C. Moderate to severe space loss, D. Lower anterior crowding
B: Single tooth missing in posterior region
Answer: B: Single tooth missing in posterior region 
Explanation: None