The correct options are
C glucose
D glycogen
Insulin is a hormone which plays a number of roles in the body's metabolism. Insulin regulates how the body uses and stores glucose and fat. When glucose is required for energy, insulin allows glucose to be taken into the cells of our body where it is used in cellular respiration to generate energy in the form of ATP. Insulin also helps in conversion of soluble glucose to insoluble glycogen in our body, which is stored in the liver and muscles.