Q. Which of the following vitamins are produced by symbiotic bacteria in humans?
A. Vitamin-B and K
B. Vitamin-A and B
C. Vitarmin-E
D. Vitamin-D
Answer: Vitamin-B and K
A. Vitamin-B and K
B. Vitamin-A and B
C. Vitarmin-E
D. Vitamin-D
Answer: Vitamin-B and K
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