Police Have Probable Cause to Believe That a Container Holds

Police have probable cause to believe that a container holds contraband.They see the container being placed in a vehicle.They have no probable cause as to the vehicle itself.To validly search the car for the container and seize the container,the police:

A) must obtain a warrant to search the car.
B) must obtain a warrant for the container.
C) must wait until they have probable cause that the vehicle itself also contains contraband.
D) need no further justification.