Question: Officer J of the Police Department of Brazos State University was informed by one of the dormitory resident assistants that student X had drugs in his room in a campus fraternity house. Acting on this information, Officer J knocked at X's door and asked if he could look around. Officer J was admitted by X. He immediately saw a suspicious bag on X's study table. But before Officer J could seize it, X ran to the table, grabbed the pound of marijuana, and threw it out the window and onto the campus street below. Officer J hurriedly went down and recovered the contraband. Assume you are the prosecuting attorney in the case against X. What is your best ground for admissibility of this evidence in a criminal prosecution-plain view, abandonment, open fields, or none of the above? Select one, give reasons for your choice, and state why you would not choose the others.