Multi-choice problem: Continue writing the next sentence in this paragraph:

A boy sits in a room and talks to a camera while holding a demonstrating how to use an electronic cigarette. the boy

Pick your answer from:
 a). holds the cigarette in his mouth, then plays a game of rock paper scissors with the camera..
 b). presses the red button on the black pack and blows the smoke..
 c). unscrews the cigarette to reveal the inside mechanism..
 d). puts the machine on his lap and touches his screen, then he removes his hand..
c).