Multiple choice Choose the pair of only fat soluble vitamins from those given below. Riboflavin and retinol Calciferol and retinol Riboflavin and tocoferol Ascorbic acid and calciferol Reveal answer Fill a bubble to check yourself B Correct answer Explanation Vitamins A, D, E, and K are fat-soluble. Retinol is Vitamin A, and Calciferol is Vitamin D. Riboflavin (B2) and Ascorbic acid (C) are water-soluble.