Which of the sentences is written correctly? A. The, well-known actor Brad Pitt, used to work as a janitor before becoming a huge star. B. The well-known actor Brad, Pitt, used to work as a janitor before becoming a huge star. C. The well-known actor Brad Pitt used to work as a janitor before becoming a huge star. D. The well-known actor, Brad Pitt, used to work as a janitor before becoming a huge star.