Officers Have a Warrant Authorizing Search for Narcotics Allegedly Being

Officers have a warrant authorizing search for narcotics allegedly being sold in a tavern. When they execute the warrant, there is a bartender and eighteen customers. Select the officers' most legally sound course of action.

A) The officers may search the premises and everyone in it for drugs.
B) The officers may search the premises for drugs and frisk the people for weapons.
C) The officers may search the premises for drugs, but need specific probable cause for each person they want to search for drugs or frisk for weapons.
D) The officers may search the premises for drugs, but need specific probable cause for each person they want to search for drugs and specific, articulable suspicion of danger to frisk for weapons.