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: Pathology
Shell teeth are more common in this variant of dentinogenesis imperfecta 
Select and explain. 
A. Type I, B. Type III, C. Type II, D. Type III and I
C: Type II
Answer: C: Type II 
Explanation: None