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
In erythroblastosis fetalis, the oral finding is/are: 
Select and explain. 
A. Deposition of pigments leading to green, brown & blue hue, B. Enamel hypoplasia, C. Rh-hump, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: Erythroblastosis fetalis may be manifested in the teeth by the deposition of blood pigment in the enamel and dentin of the developing teeth, giving them a green, brown or blue hue.
Enamel hypoplasia is also reported occurring in some cases of erythroblastosis fetalis. This usually involves the incisal edges of the anterior teeth and the middle portion of the deciduous cuspid and first molar crown. Here, a characteristic ring-like defect occurs which has been termed the Rh hump by Watson.
Ref: Shafer's textbook of oral pathology 7th edition page 770-771