Why Is It Necessary for Insulin and Glucagon to Work

Why is it necessary for insulin and glucagon to work properly in the body?

A) Glucagon improves insulin sensitivity by increasing peripheral glucose uptake and utilization.
B) When insulin and glucagon are working properly,the body's natural negative feedback mechanism for glucose levels works properly.
C) Proper utilization of glucagon by the body ensures the body won't be damaged by overstimulation of insulin.
D) They are used to help store and utilize glucose efficiently.