What Would Hershey and Chase Have Concluded If Phage Ghosts

Multiple Choice

What would Hershey and Chase have concluded if phage ghosts contained ³²P label but were absent from infected E.coli? Furthermore,they found ³⁵S lacking in the ghosts and present in the infected E.coli.

A) that protein was the genetic material in phage
B) that DNA was the genetic material in phage
C) that somehow the radioactivity prevented DNA from getting into E.coli
D) that protein and DNA together made up the genetic material