What is the name of the American film rating that indicates a film may be unsuitable for children under 13 without parental guidance?

• A G
• B PG-13 ✓
• C NC-17
• D TV-14

The PG-13 rating was introduced in 1984 after films like 'Indiana Jones and the Temple of Doom' and 'Gremlins' sparked controversy over content that fell between PG and R.