This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Fluid and electrolytes, Subject name: Medicine
Feature of severe diarrhea 
Select and explain. 
A. Metabolic acidosis, B. Metabolic alkalosis, C. High anion gap, D. Increased anion gap
A: Metabolic acidosis
Answer: A: Metabolic acidosis 
Explanation: Diarrhea can cause Non anion gap acidosis. Ref: Harrison&;s 19thE