Which vitamins are fat-soluble?

• A. B and C
• B. All vitamins
• C. A, D, E, K
• D. C and D

Answer: (C)

Fat-soluble vitamins dissolve in fat and are absorbed with dietary fats. They’re stored in the liver and body fat, so the body can use them later and excess intake over time can lead to accumulation. The vitamins that fit this group are A, D, E, and K. They require bile and fat for proper absorption, and their storage means they don’t need to be consumed every day.

In contrast, water-soluble vitamins (like B vitamins and vitamin C) dissolve in water, aren’t stored in the body to the same extent, and are excreted in urine, so they typically need more regular intake. That’s why options that pair water-soluble vitamins or claim all vitamins are fat-soluble aren’t correct.