The Supreme Court Has Used Case Law to Define the Boundaries

The Supreme Court has used case law to define the boundaries of the Miranda warning since this landmark decision was handed down.  Which is inaccurate pertaining to these boundaries?

A) Suspects must be fully aware of all the possible outcomes of waiving their rights for the Miranda warning to be considered to have been given properly.
B) Admissible evidence can be obtained without a Miranda warning if the information sought is needed to protect public safety.
C) At trial, the testimony of a witness is permissible even if her or his identity was revealed by the defendant in violation of the Miranda rule.
D) Once a criminal suspect has invoked his or her Miranda rights, police officials cannot reinitiate interrogation in the absence of counsel.