Which statement best explains how the passage supports the author's purpose?

A. The purpose is to entertain; the author jokes that gulls will take revenge if people bother them.

B. The purpose is to inform; it explains how people can safely interact with gulls.

C. The purpose is to question; the author doubts gulls can really memorize what people look like.

D. The purpose is to persuade; the author wants readers to appreciate that gulls are more intelligent than people realize.