Please choose the correct ending to complete the given sentence: Snow tubing: There are some people snow tubing on a slope covered with snow. two young children

Ending1: are being snow tubing down a steep hill. Ending2: come down the slope in red and black tubes. Ending3: are snowboarding down a hill riding their snow tubing tubes. Ending4: are talking on the hood of a car or van.

Answer format: ending1/ending2/ending3/ending4