The only evidence the Police receive regarding a murder is an anonymous tip that A has committed the murder. They detain him in handcuffs, take him to the police station, and tell him he cannot leave. The Police then get him to confess to the crime. At trial his confession is: Group of answer choices

a. Admissible, as his confession is proof that he committed the crime

b. Admissible, since there was a reasonable basis for his arrest

c. Inadmissible, under the "fruit of the poisonous tree" doctrine

d. Inadmissible, under the "good faith exception" doctrine