When the Concentration of H⁺ Increases Above Normal, for Compensation

When the concentration of H⁺ increases above normal, for compensation the response is a(n) :

A) decreased excretion of H⁺ in the urine
B) increased concentration of H⁺ in the plasma
C) increased reabsorption of all filtered bicarbonate ions
D) increased secretion of aldosterone from the posterior pituitary
E) synthesis of H⁺ by acid dissociation