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
Dentinogenesis imperfecta differs from amelogenesis
imperfecta in that, the former is 
Select and explain. 
A. A hereditary disturbance, B. The result of excessive fluoride ingestion, C. The result of faulty enamel matrix formation, D. Characterized by calcification of pulp chambers and the root canals of the teeth
D: Characterized by calcification of pulp chambers and the root canals of the teeth
Answer: D: Characterized by calcification of pulp chambers and the root canals of the teeth 
Explanation: None