Please choose the correct ending to complete the given sentence: Snow tubing: Some people are at the top of a snowy hill. they

Ending1: use inflatable tubes to slide down the slope. Ending2: are lifting and lowering very slowly the snowboard. Ending3: stop and get out of their car. Ending4: are wearing ski gear and riding rafts around.

Answer format: ending1/ending2/ending3/ending4