Multi-choice problem: Continue writing the next sentence in this paragraph:

How to prepare and install an above ground swimming pool liner
Drain all water from pool.
You may use a sump pump, your filtration system or siphon hose.
Remove all hung ladders from liner area and any other equipment that may obstruct liner area.

Select from:
(a). If any equipment is old, replace it with something new. Do not skimp, you will remove the water from pool, right now.
(b). Remove all face plates and gaskets from inside pool area, i.e. Through-the-wall (s), return (s), lights, etc.
(c). Displug all power source components that may be blocking water flow. Locate the time and date for installation.
(d). Decide if you want to submerge the swimming pool inside or outside. Stand on level ground or on a sturdy surface to gain a steady footing for this step.
(b).