Please choose the correct ending to complete the given sentence: Sports and Fitness: [header] How to do a tucked back somersault on a trampoline [title] Get two spotters. [step] This will enable you to rotate 360 degrees without any damage inflicted. [title] The spotters will place their hands on your shoulder and hamstring from either side.

Ending1: [title] Jump up and do a very tight tuck jump. [title] Allow the spotters to spin you. Ending2: [step] Roll over the spotters across the trampoline in a back flip. Put one near you in a front flip. Ending3: [step] If you don't like the feel of two spotters on each side, take one of the spotters and place it in a straddle position. The spotter nearest to you should use a handgrip on your waist. Ending4: [step] He or she will bring the hands up to shoulder height and squat. Then the spotter should have one hand on the front of your upper body and one hand on the back of your thigh.

Answer format: ending1/ending2/ending3/ending4