Which of the Following Is Always Necessary to Justify a Plain

Which of the following is always necessary to justify a plain view seizure?

A) The officer must be on the premises searching under a search warrant when the discovery is made.
B) The officer must acquire probable cause to believe that the object is associated with a crime without exceeding the lawful boundaries of his or her search authority.
C) The discovery must occur by accident.
D) All three conditions are necessary.