Correct Option: C

The mean normal blood glucose level in humans is about 4 mM (4 mmol/L or 72 mg/dL, i.e. milligrams/deciliter); however, this level fluctuates throughout the day. Glucose levels are usually lowest in the morning, before the first meal of the day (termed “the fasting level”), and rise after meals for an hour or two by a few millimolar. Normal Human Glucose Blood Test results should be 70 - 100 (mg/ dL) before meals, and less than 180 mg/dL after meals