The PATRIOT Act Allowed What Constitutionally Questionable Law Enforcement Technique

The PATRIOT Act allowed what constitutionally questionable law enforcement technique to combat terrorists?

A) National security letters to subpoena individuals to report for questioning
B) Roving wiretaps to track communication on all types of electronic devices
C) Torture of detainees suspected of having knowledge of criminal activity
D) Seizure of mobile phones of individuals expressing displeasure with the government
E) Jurisdictions to allow better oversight for monitoring suspects