You are evaluating a 36-year-old obese woman who complains of fatigue. She denies polydipsia, polyuria, polyphagia, or weight loss. Which of the following laboratory reports confirms the diagnosis of diabetes?

C One fasting glucose measurement of 128 mg/dL A One random glucose of 221 mg/dL B One random glucose reading of 221mg/dL, and another, on a later date, of 208 mg/dL D A glucose reading, taken 2 hours after a 75 g glucose load, of 163 mg/dL