Which vitamins are water-soluble?

• A. Vitamin B and Vitamin C
• B. Vitamin A and Vitamin D
• C. Vitamin E and Vitamin K
• D. Vitamin A and Vitamin B

Answer: (A)

Water-soluble vitamins dissolve in water, travel freely in the bloodstream, and are not stored in the body in large amounts; any excess is excreted in urine, so they must be consumed regularly. Among the options, the vitamins that are water-soluble are the B vitamins (the whole B-complex) and vitamin C. In contrast, vitamins A, D, E, and K are fat-soluble; they are absorbed with dietary fats and are stored in the liver and fat tissue, which is why they can accumulate. So, the best answer reflects that the B vitamins and vitamin C are water-soluble.