This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Fluid & Electrolyte, Subject name: Medicine
The most common electrolyte abnormality found in patients with normal anion gap metabolic acidosis is 
Select and explain. 
A. Hyperchloremia., B. Hypochloremia., C. Hyperkalemia., D. Hypokalemia.
A: Hyperchloremia.
Answer: A: Hyperchloremia. 
Explanation: Ans. A. Hyperchloremia.In a normal anion gaps metabolic acidosis there is by definition a rise in the serum chloride equivalent to the fall in the serum bicarbonate such that the anion gap (Na-Cl-HCO3 ) remains unchanged.