You’re going to make a presentation about people’s increasing reliance on mobile phone. Which of the following is NOT appropriate　to be used to grab audience’s attention in the opening of a presentation?

You’re going to make a presentation about people’s increasing reliance on mobile phone. Which of the following is NOT appropriate　to be used to grab audience’s attention in the opening of a presentation?
A.You open with a quotation: "If television is a babysitter, the Internet is a drunk librarian who won't shut up".　
B.You ask audience to imagine what if they live without mobile phone for two days.
C.You display a picture in which all the people are playing with mobile phones on a subway car.
D.You open with a question: “Could you tell me how often you update your We-chat Moments?”
正确答案：You open with a quotation: "If television is a babysitter, the Internet is a drunk librarian who won't shut up".