Write the next sentence in the following story.

How to install a bakflip hd tonneau cover on a ford f150
Place the rail of the bakflip hd on right hand side bed rail of the f150.
Slide the tonneau rail all the way forward to the bulk head. It is a good idea to have a squeeze clamp or similar to hold it in place.

OPT:
A). Slowly turn the bakflip over so it moves slowly, its going to wobble and have to be bent the opposite way of the rail. Be prepared for a lot of bumping.;
B). Tightly wrap round tray socket on right hand rail over cover and fasten. Compression disks complete a swivel mounted over rail.;
C). Place the included rail clamps in place. Tighten with a wrench or socket.;
D). This will prevent the oil from jumping up and down accidentally while the g2 is being painted. Place the nikon bolt assembly inside the couplers cradle.;. The answer should be
C).