Which of the Following Is Established by the Fourth Amendment

Which of the following is established by the Fourth Amendment with regard to searches of automobiles?

A) Officers must obtain the consent of a driver before searching his or her vehicle even if they have obtained a warrant for the search.
B) Officers do not require a warrant to search an automobile if they have probable cause to believe that a vehicle contains contraband.
C) Individuals caught for speeding will have to submit their vehicles for inspection.
D) Automobiles that are impounded can be searched without a warrant even after they are released.