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

The male then gets on the skateboard and start balancing himself on it. After, he picks up the skateboard and moves a few feet back and starts skateboarding. once

Available options:
[A]. again the camera captures whenever he is going back and fourth along the park but it is a competition again.
[B]. he is safely on the board, the boy pulls a rope on the board and begins skateboarding in the street.
[C]. done, he picks up the skateboard and holds it back down to his side.
[D]. he lays on the board, he starts skateboarding through some park.
[C].