Please choose the correct ending to complete the given sentence: Painting: A single hand of an artist is painting a picture on canvas. With delicate strokes, the images of green are seen. with more work

Ending1: to do, the brush finally touches the canvas. Ending2: , the image begins to take shape in that of a flower. Ending3: , the brush is combined with the paint to create a more complete picture. Ending4: , the image becomes taller, as a large waterfall is shown.

Answer format: ending1/ending2/ending3/ending4