The correct option is A B3
Vitamin B3 is present in all food stuffs. The food that we normally eats contains large amount of protein, includes niacin and the amino acid tryptophan, which can be converted to vitamin B3 (also called as niacin) in the body. It is found in foods with a high protein content, such as meat, eggs, and peanuts. It can also be found in milk, mushrooms, and green vegetables, cereals etc.