Please choose the correct ending to complete the given sentence: Snow tubing: Several people are out snow tubing down a snow caped slope. People are going downhill on their snow tubes wearing winter gear and goggles. some of them

Ending1: are driving while it's snowing and they lose control of their machine. Ending2: have anchors fastened to their tubes. Ending3: are doing tricks sitting down on ski skates while they're going. Ending4: are snow tubing in groups of threes.

Answer format: ending1/ending2/ending3/ending4