A) vitamin-\[{{B}_{1}}\]
B) vitamin-\[{{B}_{12}}\]
C) vitamin-\[{{B}_{2}}\]
D) vitamin-K
Correct Answer: B
Solution :
The deficiency of vitamin-\[{{B}_{12}}\] (cyanocobalamine) causes pernicious anaemia (RBC deficiency in haemoglobin) in humans.
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