A researcher is interested in whether or not a transcription factor binds to a specific site on a ...

A researcher is interested in whether or not a transcription factor binds to a specific site on a strand of DNA. However, the samples accidentally contain SDS. What will the gel mobility shift assay results show?
 
  A. The protein will bind the DNA and retard the movement of the DNA through the gel.
  B. The protein will not bind to the DNA and the movement of the DNA through the gel will not be affected
  C. The protein will bind the DNA and the movement of the DNA through the gel will not be affected.
  D. The protein will not bind the DNA and the movement of the DNA through the gel will be affected.