When Blood Starts to Become More Alkaline Than Normal, the Renal

When blood starts to become more alkaline than normal, the renal tubules begin to

A) secrete bicarbonate and H⁺ through type B cells.
B) secrete bicarbonate while reabsorbing H⁺ in exchange through type B cells.
C) secrete H⁺ while reabsorbing bicarbonate in exchange through type A cells.
D) absorb bicarbonate and H⁺ through type A cells.