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
Which of the following condition is characterized by abnormally large pulp chamber? 
Select and explain. 
A. Amelogenesis imperfecta, B. Regional odontodysplasia, C. Dentinogenesis imperfecta, D. Dentinal dysplasia type I
B: Regional odontodysplasia
Answer: B: Regional odontodysplasia 
Explanation: None