First vitamin to be produced through fermentation process using a wild bacterium

First vitamin to be produced through fermentation process using a wild bacterium was

Options

(a) Vitamin-D
(b) Vitamin-C
(c) Vitamin-B₁₂
(d) Vitamin-B₂

Correct Answer:

Vitamin-B₁₂

Explanation:

Vitamin B12 was first vitamin to be produced through fermentation.

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