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
A girl suffering from browning of teeth, wearing of enamel but not cavitatory. OPG shows obliteration of pulp with narrowing of canal & deposition of secondary dentin, she gave the history that out of her 4 brothers, 2 are suffering from the same disease. She is suffering from 
Select and explain. 
A. Amelogenesis imperfecta, B. Dentinogenesis imperfecta, C. Fluorosis, D. Odontodysplasia
B: Dentinogenesis imperfecta
Answer: B: Dentinogenesis imperfecta 
Explanation: None