A Bacterial Strain Is Able to Grow on Rich Medium

Multiple Choice

A bacterial strain is able to grow on rich medium (which contains all the amino acids,vitamins,and a variety of carbon sources) but not on minimal medium or on minimal medium supplemented with leucine.What could be the genotype(s) of this bacterial strain with respect to the arg and leu loci?

A) arg⁺leu^-
B) arg^-leu⁺
C) arg⁺leu^- or arg^-leu⁺
D) arg^-leu^- or arg⁺leu^-
E) arg^-leu^- or arg^-leu⁺