What happens next in this paragraph?

How to hook up a trailer
Raise your trailer tongue ball socket or coupler to a height to clear the ball.
Line up the center of your vehicle with the center of your trailer.
Use a jack attached to the tongue.
Available choices: A). If using a cow hitch or bike trailer, use a boat jack. Connect your hitch to the pulley.. B). Pull the tongue ball at the right length and angle of your trailer. Stop moving so that the tongue ball extends completely.. C). Be sure to jack up enough so you have enough clearance so you do not hit the trailer. Stop the vehicle once the tongue coupler is over the ball.. D). Your second drill bit will be used to relieve a reasonable gap between the tongue and your driver side bodywork. Squeeze the drills using a normal (but not hurting) motion until the drill is complete..
C).