Which of the Following Tests Confirms a Diagnosis of Diabetes

Which of the following tests confirms a diagnosis of diabetes?

A) Fasting Blood Glucose: ≥126 mg/dL on 2 separate occasions
B) Hemoglobin A1C: ≥ 6.5%
C) Oral Glucose Tolerance Test (75 g of anhydrous carbohydrates administered) with a 2-hr blood glucose level ≥200 mg/dL
D) All of these