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

Several male children are biking. Children sit on bikes getting ready to race. A cameraman captures the boys sitting on their bikes. a man

Select from the following.
i. stands behind them as they race around..
ii. is zoomed in on their heads..
iii. rides his bike and zooms in to capture the boys racing toward each other..
iv. walks back and forth around the boys in their bikes..
iv.