In the Hershey–Chase experiments the following isotopes were used

• A

  ${ }^{32}\mathrm{S},{ }^{30}\mathrm{P}$

• B

  ${ }^{31}\mathrm{S},{ }^{29}\mathrm{P}$

• C

  ${ }^{35}\mathrm{S},{ }^{32}\mathrm{P}$

• D

  ${ }^{34}\mathrm{S},{ }^{33}\mathrm{P}$