Please choose the correct ending to complete the given sentence: Putting in contact lenses: The video begins with various words and instructions on how to insert & remove halloween contact lenses. a contact lens container

Ending1: is replaced with a compact one and the lens is placed into a screen. Ending2: is then filled with contact solution and the contacts into both sides of the container. Ending3: is shown and an attachment is taken off by a dvd device. Ending4: transfers contact time with audiosol.

Answer format: ending1/ending2/ending3/ending4