Correct Option: C

Vitamin K is a group of structurally similar, fatsoluble vitamins that are needed for the posttranslational modification of certain proteins required for blood coagulation and in metabolic pathways in bone and other tissue. They are 2-methyl1,4-naphthoquinone (3-) derivatives. This group of vitamins includes two natural vitamers: vitamin K₁ (found in highest amounts in green leafy vegetables) and vitamin K₂ (form used by enzymes in animals).