A) vitamin A
B) vitamin D
C) vitamin \[{{B}_{12}}\]
D) vitamin C
Correct Answer: C
Solution :
[c] Vit. \[{{B}_{12}}\] (extrinsic factor) and folic acid are important for the conversion of proerythro- blast (megaloblast) into erythroblast (nor- moblast). Cobalt is important as a component of \[{{B}_{12}}\] for the growth of normoblasts and later RBC. Vitamin C is of less value during the growth of normoblast.
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