A 2-Week-Old Infant Presents with Vomiting, Lethargy, and Convulsions Without

A 2-week-old infant presents with vomiting, lethargy, and convulsions without evidence of an infectious process.Laboratory examination reveals hyperammonemia without acidosis.The diagnosis is a hereditary deficiency of N-acetylglutamate synthetase.N-acetylglutamate is an allosteric activator of:

A) Arginase.
B) Carbamoyl-phosphate synthetase I.
C) Arginosuccinate lyase.
D) Ornithine transcarbamoylase.
E) Arginosuccinate synthetase.