The Supreme Court Has Ruled That Which Test or Standard

The Supreme Court has ruled that which test or standard applies to evaluating the meaning of interrogation under the Sixth Amendment right to counsel?

A) did the police deliberately try to elicit a response
B) did the police directly ask the suspect a question
C) did the police use words or actions that that they knew would be likely to
Elicit a response from the suspect.
D) did the police use force while questioning the suspect