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
(A) Amelogenesis imperfecta (B) Dentinogenesis imperfecta (C) Fluorosis (D) Odontodysplasia
(B) None