Please choose the correct ending to complete the given sentence: Building sandcastles: Two girls are sitting on a beach. Each girl takes turns filling a pal with sand. the girls

Ending1: mix the grains and cement together for a container full of sand. Ending2: then make a sand castle. Ending3: throw the sand into a marker. Ending4: lay out the sand on a blue screen.

Answer format: ending1/ending2/ending3/ending4