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

There's a man coming out of his garage with an electrical leaf blower. he

Available options:
(A). gets the pilot of the car started using the leaf blower.;
(B). opens the screen door and he's using a small, portable a mower to move the leaves on the walkway.;
(C). demonstrates how to put it on center.;
(D). begins blowing the leaves off of his yard for fall cleanup.;
(D).