Like a Polaroid projector

You’ve connected your laptop to an external projector, but nothing appears on the projector screen. Which of these would be the best choice to resolve this problem?

A) Disconnect and restart the projector

B) Disconnect the projector cable from the laptop and reconnect it

C) Use Fn keys on the laptop to change the display settings

D) Replace the cable between the projector and the laptop

E) Shake the projector