Select from options: Continue writing the next sentence.

How to install sliding barn doors
Measure and cut two lengths of mounting board for each barn door.
The boards should be as long as the doors and about 1 inch (or 4 cm) wider than the track.
Attach the mounting boards to the top and bottom of the doorway using drywall anchors and ensure that the mounting boards run straight along the doorway.

Choose your answer from:
(A). Mount the 3 mounting boards to the door frame in a set row. Lift and push, holding the door frame for support and lifting.;
(B). Measure and cut two lengths of track for each barn door. Use joint brackets to attach sections of track as needed.;
(C). Mark where you want to mount your sliding barn door using mounting hardware. Measure the door of the barn and mark a spot along the plywood where the track stops.;
(D). Patch any cracks and gaps in the doorway with drywall compound. Drywall compounds of course must be obtained and repaired at a hardware store.;
Answer:
(B).