Ratings can help you determine if a movie or CD is appropriate for your child. Both movies and CDs have ratings, informing you of their intended audience. Movie ratings include: G — general audience, PG — parental guidance, PG-13 — it may be inappropriate for children under 13 years, R — restricted, and NC-17 — no-one under 17 years will be admitted. CDs may have labels, like Parental Advisory Explicit Content, on the exterior of the CD. Additionally, even some CDs that have parental advisory warnings may sell a "clean" version.