Please choose the correct ending to complete the given sentence: Using the rowing machine: A woman work out in a rowing machine pulling a string with a handle. the woman

Ending1: moves in the seat backward and forward while pulling the handle. Ending2: holds onto the handle with a second hand and works out on a machine with her foot. Ending3: is running around moving her arms back and fourth pushing the bolts and checks that her oar is properly in place. Ending4: stops and things explains.

Answer format: ending1/ending2/ending3/ending4