Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to build a dog agility jump [title] Mark your measurements. [step] Depending on where you bought the pvc pipe, you will need to measure and mark the pipe before you cut it. Most 1½-inch pvc pipe comes in in 5-foot (1.52 m) lengths.

Ending1: If you plan on using the pvc pipe to jump, and you have sustained substantial injury, then you will need a metric measuring tool to measure the position, length, and depth of your pipe. [title] Pull back 1 or 2 inches (2.5 to 5 cm) of pipe. Ending2: With a tape measure and sharpie, measure and then mark the cuts that you need to make on your pvc pipe. For your convenience, you might also ask the sales associate if they would cut the pipe to your specifications. Ending3: Use basic rotary-pattern savers for cutting out the right length for the jump. [substeps] If you don't have pvc pipe laying around, do a quick inspection of the area around the pipe before you start cutting. Ending4: 16-foot (1.46 m) pipes are usually 20 feet (4.6 m) in length, depending on the length you cut your pipes to. [title] Drill holes for the top and bottom of the pipe.

Answer format: ending1/ending2/ending3/ending4