Donald, a Defense Attorney, Has Been Hired to Represent Robert

Donald, a defense attorney, has been hired to represent Robert who is charged with robbery. Robert has an extensive criminal record and does not want to go to trial. Robert confessed to the police but hopes that Donald can prevent the confession being admitted at trial. At the suppression hearing the judge ruled that the confession was obtained in violation of Robert's Miranda rights. Donald wants to use the ruling to convince the prosecutor to accept a guilty plea to misdemeanor theft. Which of the following arguments is most likely to convince the prosecutor to accept the plea bargain?

A) If the prosecution does not agree to a plea bargain the case will automatically be dismissed because the defense won the suppression hearing
B) The confession was the only piece of evidence linking Robert to the robbery
C) If the case goes to trial, the jury will be told that the police violated Robert's rights by questioning him improperly
D) Judges normally give lighter sentences to defendant's whose rights were violated