Hershey and Chase Experimented with Radioactively Labeled Phosphorus and Sulfur

Hershey and Chase experimented with radioactively labeled phosphorus and sulfur to determine that DNA and not protein is the genetic material. Which of the following was essential to the success of the experiment?

A) Sulfur is present in amino acids in the protein coat of bacteria.
B) Phosphorus is present in high amounts in DNA.
C) Sulfur is not present in DNA.
D) Phosphorus is not present in amino acids in the protein coat of bacteria.
E) All of the answer choices describe information that was necessary for the success of the experiment.