Which Statement Is Incorrect

Multiple Choice

Which statement 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.
E) When severe acidosis is present, the kidney tubules secrete NH3.