According to the Supreme Court Opinion in Alabama V

According to the Supreme Court opinion in Alabama v. White:

A) an anonymous tip can never justify a Terry stop
B) an anonymous tip can justify a Terry stop if an officer's later direct observations confirm the informant's information
C) a Terry stop can be based on information from a known informant with a history of providing reliable information
D) an anonymous tip can justify a Terry stop if officers found a weapon on the person they stopped based on the tip