The correct option is C Tocopherol
Vitamins are organic molecules that needed in small amounts in the diets of some higher animals. Coenzymes assist every cell in the human body. Biotin works as a coenzyme for other enzymes that catalyze various chemical reactions in metabolism. Folic acid works as a coenzyme in synthesizing several amino acids, purines and thymine, which are used in making DNA. Riboflavin, also called as vitamin B2, serves as a precursor to two important coenzymes.