Please choose the correct ending to complete the given sentence: Using the rowing machine: Then, the man increases the resistance of the machine and continue exercising. The foam seat is contoured and looks comfortable. the machine

Ending1: stop moving and the person massages the bench. Ending2: spins steadily and a coin turns till it stops. Ending3: controls movements with hand movements. Ending4: has a multi functional on board computer.

Answer format: ending1/ending2/ending3/ending4