The Health Care Provider Orders an 1800-Calorie Diabetic Diet and 40

The health care provider orders an 1800-calorie diabetic diet and 40 units of (Humulin N) insulin U-100 subcutaneously daily for a patient with diabetes mellitus.Why would a mid-afternoon snack of milk and crackers be given?

A) To improve nutrition.
B) To improve carbohydrate metabolism.
C) To prevent an insulin reaction.
D) To prevent diabetic coma.