82. What is the main pharmacological action of benzoate and phenylbutyrate, which are used to treaturea cycle disorders?
(A) It provides intermediates required for the urea cycle to enhance the efficiency of the entireurea cycle.
(B) It acts as allosteric activators of carbamoyl phosphate synthase I to enhance the efficiencyof the urea cycle.
(C) Their metabolites combine with glycine and glutamine, respectively, to form derivativesthat are excreted, reducing the burden on the urea cycle.
(D) It promotes the synthesis of arginine to prevent arginine deficiency.
(E) It increases the activity of ornithine transcarbamylase to facilitate urea synthesis.