With no explanation, chose the best option from "A", "B", "C" or "D". Muhammad stated that he understood his rights, that he wanted to talk to the agents, but that he did not want to sign the waiver of rights form. At that point, the agent told Muhammad that he would not talk with him unless he signed the form. Agent Gandolfo then gave the form to Muhammad and left the room. When the agent returned, he noticed that Muhammad had signed the form and he then began the interview. A defendant must unambiguously request the assistance of counsel in order to invoke his right to an attorney under Miranda and thus prevent the interrogator from asking any further questions. Davis v. United States, 512 U.S. 452, 458-60, 114 S.Ct. 2350, 2355, 129 L.Ed.2d 362 (1994); see also Edwards v. Arizona, 451 U.S. 477, 484-85, 101 S.Ct. 1880, 1884-85, 68 L.Ed.2d 378 (1981) (<HOLDING>). In Davis, the defendant claimed that he had

A: holding that the interrogation must cease once the suspect invokes his miranda right to counsel
B: holding that fifth amendment protection against selfincrimination requires police to notify suspect of right to counsel and to cut off interrogation once suspect invokes the right absent counsel further interrogation may not occur unless suspect initiates subsequent conversation if police initiate subsequent interrogation there can be no valid waiver of counsel even though police advise suspect of his or her constitutional rights and suspect acquiesces in the interrogation
C: holding that once the right to counsel is invoked custodial interrogation must cease until the suspects attorney is present
D: holding that once miranda warnings have been given if the individual indicates in any manner  that he wishes to remain silent the interrogation must cease any statement taken after the person invokes his privilege cannot be other than the product of compulsion subtle or otherwise
A.