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

We see a man working on a piece of equipment. The man heats the caulk and scrapes it off. the

Options are:
 a). screen flashes and the man puts on new caulk..
 b). man then scrapes it back on again..
 c). man finishes and unscrews the safety ring to remove the hook..
 d). man rinses the metal when he's done..
a).