Under which of the following circumstances would a DNA microarray be useful?

A)It would enable a researcher to determine the differences in gene expression between cell types.
B)Researchers are trying to determine if an individual has inherited a genetic disease from their parents.
C)It would enable doctors to determine which genes are responsible for producing diseased tissue in an individual.
D)All of these are circumstances in which a DNA microarray would be useful.
E)None of these are circumstances in which a DNA microarray would be useful.