Which of the Following Is True About Police Inventory of a Vehicle

Which of the following is true about police inventory of a vehicle?

A) Police are not permitted to search for evidence of crime.
B) Police may not seize contraband or other items that they observe open to view.
C) Police need probable cause to inventory a vehicle.
D) Inventories are governed by a specific set of principles that relate to search procedures which were established by case law decided by the U.S. Supreme Court.