In Trying to Determine Whether DNA or Protein Is the Genetic

In trying to determine whether DNA or protein is the genetic material, Hershey and Chase made use of which of the following facts?

A) DNA contains sulfur, whereas protein does not.
B) DNA contains phosphorus, but protein does not.
C) DNA contains nitrogen, whereas protein does not.
D) DNA contains purines, whereas protein includes pyrimidines.
E) RNA includes ribose, while DNA includes deoxyribose sugars.