Which question below did the Miranda v. Arizona outcome answer?

AShould more evidence be required to arrest someone of a crime than just the victim's identification of the accused criminal?

BShould a defendant be allowed to sign a written confession to a crime if an attorney is not present when the accused is being questioned by the police?

CShould legal counsel always be appointed by the court, or should the citizen accused of a crime have the right to choose the attorney he would like to represent him?

DShould a confession be allowed in a court of law if it was obtained without warnings against self-incrimination and without legal counsel?