A patient with salicylic acid poisoning has the following arterial blood gas analysis report: pH is 7.12 , PCO2 is 18 mm Hg HCO3– is 12 mmol/L. The resulting acid-base abnormality can be best labelled
Metabolic acidosis with respiratory alkalosis Metabolic acidosis with respiratory acidosis Respiratory acidosis with metabolic alkalosis Metabolic acidosis