Please choose the correct ending to complete the given sentence: Wakeboarding: Cars are going on a road next to a lake. young men

Ending1: are playing mud polo in a muddy area. Ending2: are in a raft moving in the water. Ending3: are riding on a bus. Ending4: are taking out boards from the back part of the truck.

Answer format: ending1/ending2/ending3/ending4