Multi-select problem: How does the next paragraph end?

The words skate like a pro are shown at the bottom. A man roller blades backwards. A close up of the skates are shown. a skater

Select from the following.
[I] tries to skate forward, but is frozen.
[II] flips, hits the board, walks towards the camera and bows.
[III] bends over as they skate.
[IV] skates sideways on the ice.
[III]