Arnold is going to write a story to share with his class. He wants to outline the story in a chart. Arnold wants the story to be about a boy who becomes a rock star. He made the chart below. The boy learns to play guitar-->He joins a band-->They get discovered-->X What best fits the box marked "X" in Arnold's chart? A. The boy becomes famous. B. The boy learns the drums. C. The boy buys a CD. D. The boy becomes lead singer.