Figure 13-1

What conclusion was associated with mutant strain III in the accompanying figure?

A) It contained all the enzymes needed for normal metabolism.
B) It was missing all the enzymes for metabolism of amino acids.
C) It was missing the enzyme that catalyzes the conversion of citrulline to arginine.
D) It was missing the enzyme that catalyzes the conversion of ornithine to citrulline.
E) It was missing the first enzyme in the arginine metabolic pathway.