Multiple choice Which of the following is not a fat soluble vitamin? Vitamin A Vitamin D Vitamin E Vitamin C None of these Reveal answer Fill a bubble to check yourself D Correct answer Explanation Vitamins are classified as either fat-soluble or water-soluble. Vitamins A, D, E, and K are fat-soluble, meaning they are stored in the body's fatty tissue. Vitamin C is water-soluble and is not stored in the body, requiring regular intake.