Which statement is TRUE concerning vitamins? "Vitamins A, D, E, and K are water soluble." Large doses provide extra energy for physical activity. Vitamins C and B complexes are stored in the body cells in moderate quantities. Vitamins contain calories. Vitamins C and B complexes are water soluble.

Vitamins are substances present in food in small amounts that are essential for the proper functioning of the body. They act as a catalyst in the chemical reactions that occur in the human body, causing the release of energy. Vitamins are divided into two large groups:fat soluble (vitamins A, D, E and K) or water soluble (vitamins B and C). Water-soluble vitamins are those that dissolve in water. In this group are vitamins C and B1, B2, B3, B6 and B12. Their storage in the body is minimal, so the daily diet must meet the needs of these substances. With the practice of physical activity, a large number of metabolic reactions are produced in which vitamins are involved, so intense exercise can cause deficiencies of these vitamins, requiring the intake of supplements.