Correct Option: C

The blood sugar concentration or blood glucose level is the amount of glucose (sugar) present in the blood of a human or animal. The body naturally tightly regulates blood glucose levels as a part of metabolic homeostasis. 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 - 130 (mg/ dL) before meals, and less than 180 mg/dL after meals (as measured by a blood glucose monitor). Less than 100 mg/dl (milligrams per deciliter) = normal fasting glucose. More than 100 but less than 126 mg/dl = pre-diabetes. More than 126 mg/dl = provisional diagnosis of diabetes.