Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to prepare and install an above ground swimming pool liner [title] Drain all water from pool. [step] You may use a sump pump, your filtration system or siphon hose. [title] Remove all hung ladders from liner area and any other equipment that may obstruct liner area.

Ending1: [step] If any equipment is old, replace it with something new. Do not skimp, you will remove the water from pool, right now. Ending2: [title] Remove all face plates and gaskets from inside pool area, i.e. [step] Through-the-wall (s), return (s), lights, etc. Ending3: [title] Displug all power source components that may be blocking water flow. [title] Locate the time and date for installation. Ending4: [title] Decide if you want to submerge the swimming pool inside or outside. [step] Stand on level ground or on a sturdy surface to gain a steady footing for this step.

Answer format: ending1/ending2/ending3/ending4