Please choose the correct ending to complete the given sentence: Decorating the Christmas tree: A woman is standing on a ladder putting decorations on a christmas tree. people

Ending1: are helping her decorate the christmas tree. Ending2: are riding bikes on an open field in a carnival. Ending3: are sitting on stools by the christmas tree. Ending4: are decorating the tree behind her.

Answer format: ending1/ending2/ending3/ending4