Michelle, a Crime Investigation Officer, Has Been Working on a Homicide

Michelle, a crime investigation officer, has been working on a homicide case for over a year. She has taken in a suspect for interrogation and knows that the suspect has connections with the murder. Since the case is complicated, her only hope is if the suspect confesses. However, The Fifth Amendment guarantees protection against self-incrimination. In this case, which of the following can Michelle use to obtain a confession?

A) She can use physical or psychological duress.
B) She can produce false documents in good faith.
C) She can hold the suspect's relatives in custody.
D) She can use a confidential informant to threaten the suspect.