Leonard Walked to the Podium,made Direct Eye Contact with the Audience,then

Multiple Choice

Leonard walked to the podium,made direct eye contact with the audience,then asked the audience: "Have you ever wondered what a hot dog is made of? Do you really want to know?" What introductory device was Leonard using?

A) opening with a startling facts
B) asking rhetorical questions
C) establishing his credibility
D) using personal references