Which Statement Concerning the Kidneys' Response to Increased [H⁺] in the Body

Multiple Choice

Which statement concerning the kidneys' response to increased [H⁺] in the body fluids is INCORRECT?

A) When [H⁺] increases, the kidneys conserve HCO₃^- by reabsorbing more HCO₃^- and reducing its excretion in the urine.
B) When [H⁺] increases, the kidneys secrete more H⁺ to be eliminated in the urine.
C) When [H⁺] increases, the kidneys secrete more basic phosphate to buffer the H⁺ in the tubular filtrate.
D) When [H⁺] decreases, the kidneys excrete more HCO₃^- into the urine.