The Patient Who Has Had Diarrhea for the Last 3

The patient who has had diarrhea for the last 3 days has blood gases of pH of 7.1,HCO₃^- of 20 mEq/L,and PCO₂ of 36 mm Hg.These laboratory values are consistent with which acid-base imbalance?

A) Respiratory alkalosis
B) Metabolic alkalosis
C) Respiratory acidosis
D) Metabolic acidosis