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
All of the following result in endogenous pigmentation of teeth except: 
Select and explain. 
A. Tetracycline, B. Fetal jaundice, C. Erythroblastosis fetalis., D. Vitamin B deficiency
D: Vitamin B deficiency
Answer: D: Vitamin B deficiency 
Explanation: Discoloration of either deciduous or permanent teeth may occur as result of tetracycline deposition during prophylactic or therapeutic or therapeutic regimens instituted either in the pregnant female or postpartum in the infant. Tetracycline and its homologues have a selective affinity for deposition in bone and tooth substance, possibly through the formation of a complex with calcium ions in the surface of the microcrystals of hydroxyapatite.