Which authority supervises and enforces laws regarding advertising to children via the Internet?

Which authority supervises and enforces laws regarding advertising to children via the Internet?

A. The Office for Civil Rights

B. The Federal Trade Commission

C. The Federal Communications Commission
D. The Department of Homeland Security

Reference: https://www.ftc.gov/sites/default/files/documents/public_statements/advertising-kids-and-ftc-regulatory-retrospective-advises-present/040802adstokids.pdf