Please choose the correct ending to complete the given sentence: Scuba diving: Two men push a small private helicopter out of its shed. They land on a beach, then fly it over the clear ocean water. they

Ending1: walk, underwater, along a grassy beach. Ending2: skydive, opening their parachutes as they get closer to the water. Ending3: tune up the helicopter to maintain speed, then lift off. Ending4: sail a boat back and forth over the calm waters of the ocean.

Answer format: ending1/ending2/ending3/ending4