Acomatose infant is brought to the er. in the course of the examination, plasma ammonia was found to be elevated 20-fold over normal values. urine orotic acid and uracil were both greater than normal. a defect of which of the following enzymes is the most likely diagnosisa. arginaseb. argininosuccinate lyasec. carbamoyl phosphate synthetase 1 (ammonia substrate)d. carbamoyl phosphate synthetase 2 (glutamine substrate)e. ornithine transcarbamoylase