The Formation of HCl in the Stomach Involves the

The formation of HCl in the stomach involves the

A) active transport of hydrogen ions from parietal cells into the lumen of the stomach.
B) exchange of sodium ions for hydrogen ions in the transport process.
C) active transport of chloride ions from parietal cells into the lumen of the stomach.
D) exchange of sodium and bicarbonate ions.
E) the combination of carbon dioxide and water.