Question

Assume that an Ames test is performed on an unknown compound. PlateA receives distilled water and rat liver enzymes. The compoundunder test is placed in plate B. Plate C receives the compoundunder test and rat liver enzymes. The next morning plate A has onlyone or two colonies, plate B has many colonies, and plate C hasmany colonies. The best interpretation is:
(explain answer)

A. rat liver enzymes are mutagenic
B. the compound being tested is mutagenic
C. only auxotrophic colonies can grow on the test plates
D. the compound being tested is not mutagenic, but can be convertedto mutagenic compounds by the rat liver enzymes
E. the compound being tested is mutagenic but the rat liver enzymesdestroyed the mutagens