Please choose the correct ending to complete the given sentence: Building sandcastles: Two girls are sitting in sand on a beach. The girls begin building a sand castle. waves from the ocean

Ending1: becomes visible at the end. Ending2: come in and wash away the sand castle. Ending3: are causing the girls to do flips in the sand. Ending4: give them the castle direction.

Answer format: ending1/ending2/ending3/ending4