An Officer Makes a Valid Stop of an Automobile and Wants

An officer makes a valid stop of an automobile and wants to ask the driver questions about his travel plans and what is in the vehicle.These questions:

A) must be preceded by Miranda warnings.
B) may be asked routinely as part of the stop.
C) may be asked only if the officer has a reasonable suspicion of wrongdoing.
D) may be asked only if the officer has probable cause to believe there is criminal activity involved.