Multiple choice Consider the following substances- Ascorbic acid Folic acid Nicotinic acid Pantothenic acid Which of these are vitamins? 1, 2, 3 and 4 2, 3 and 4 1, 2 and 4 1 and 2 Reveal answer Fill a bubble to check yourself A Correct answer Explanation All four substances listed are vitamins. Ascorbic acid is Vitamin C, folic acid is Vitamin B9, nicotinic acid (niacin) is Vitamin B3, and pantothenic acid is Vitamin B5.