Mark and Debbie Were Playing with a Frisbee

Mark and Debbie were playing with a frisbee.Debbie accidentally threw the Frisbee over Mark's head and it landed on the Biltmore Estate.Mark, the owner of the frisbee, enters the Builtmore Estate to retrieve the frisbee.Mark's entry is:

A) a trespass.
B) privileged by necessity.
C) privileged because he was reclaiming personal property.
D) privileged because the frisbee was a nuisance.
E) none of the above.