Write the next sentence in the following story.

The two then put on their green biking gloves and get back on the bikes. A skate park is then shown and one of the boys begin doing tricks over the bumps. once

Choose from:
A). on, he then comes back, turns his bike on so he is facing the camera, and begins to skateboard.
B). he is done the video is cut out over the numbers on a box.
C). completed, the bikes are walked over and the boys begin to shake each others hand.
D). the boy is done he hops off and goes on all fours again.. The answer should be
C).