This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
Which of the following statements about Diabetic Ketoacidosis is true? 
Select and explain. 
A. Decreased Bicarbonate, B. Increased Lactate, C. Normal anion gap, D. Glucose < 250 mg/dl
A: Decreased Bicarbonate
Answer: A: Decreased Bicarbonate 
Explanation: Typical of DKA: 1. Hyperglycemia >250mg/dl 2. Acidosis with blood pH < 7.3 3. Sodium Bicarbonate < 15 mEq/L 4. Serum positive for ketones Ref: CMDT 2008 Edition, Page 1062.