Police May Have an Informant Wear a "Wire" That Transmits

Police may have an informant wear a "wire" that transmits conversations:

A) without any form of judicial approval.
B) only if a warrant has been issued under the Wiretap Act or equivalent state law.
C) only if a warrant has been issued under the Foreign Intelligence Surveillance Act (FISA) .
D) only if a warrant has been issued under the USA PATRIOT Act.