Please choose the correct ending to complete the given sentence: Powerbocking: We see a boy opening a box in a car. The boy puts on his jumpstilts and helmet. the boy

Ending1: ropes a calf in a small ring in a scrap yard. Ending2: walks around the parking lot. Ending3: stands on the top of a mountain. Ending4: then stands up with a rock in his hand.

Answer format: ending1/ending2/ending3/ending4