Multi-choice problem: Continue writing the next sentence in this paragraph:

She then shows how to put them in the girl's hair, keeping it in place with combs and clips. when it

Choose from: I. 's all done, she finishes and shows a few poses before kneeling back down and speaking some more. II. is done, she turns around and begins putting hair up and down on the back of her head. III. has done, she then cutters it well to make sure it is straight. IV. 's set, she removes the curlers to show off beautiful curls.
IV.