Which of the Following Would Be True of a Strain

Which of the following would be true of a strain that can grow in minimal medium containing ornithine, citrulline, or arginine, but not in minimal medium alone? Bread mold can grow in a minimal medium without supplements (wild type) while certain mutated strains (mutants) can only grow in a minimal medium that is supplemented with specific intermediates found in the following metabolic pathway for arginine synthesis:
minimal ------> ornithine -------> citrulline ------> arginine, where enzyme 1 converts the precursor to ornithine, enzyme 2 converts ornithine to citrulline, and enzyme 3 converts citrulline to arginine.

A) The strain would have a mutation in the gene that encodes enzyme 1.
B) The strain would have a mutation in the gene that encodes enzyme 2.
C) The strain would have a mutation in the gene that encodes enzyme 3.
D) The strain would have a mutation in the gene that encodes for enzymes 1, 2, and 3.
E) The strain would be the wild type with no genetic mutations.