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
Yellow or green pigmentation of teeth is seen in: 
Select and explain. 
A. Erythroblastosis fetalis, B. Porphyria, C. Internal resorption, D. Nasmyth membrane
A: Erythroblastosis fetalis
Answer: A: Erythroblastosis fetalis 
Explanation: None