Please choose the correct ending to complete the given sentence: Painting: They are dropping thinner into the paint with a dropper. There is a model airplane sitting on the table. the airplane

Ending1: is using fluid hand paint to paint its wings. Ending2: flies away from the camera one time. Ending3: is flying. Ending4: is being painted a gold color.

Answer format: ending1/ending2/ending3/ending4