Implementation of Privacy Controls for Compliance with the Requirements of the Children's

Implementation of privacy controls for compliance with the requirements of the Children's Online Privacy Protection Act (COPPA) is necessary for all the following situations EXCEPT?

A) A virtual jigsaw puzzle game marketed for ages 5-9 displays pieces of the puzzle on a handheld screen. Once the child completes a certain level, it flashes a message about new themes released that day.
B) An interactive toy copies a child's behavior through gestures and kid-friendly sounds. It runs on battery power and automatically connects to a base station at home to charge itself.
C) A math tutoring service commissioned an advertisement on a bulletin board inside a charter school. The service makes it simple to reach out to tutors through a QR-code shaped like a cartoon character.
D) A note-taking application converts hard copies of kids' class notes into audio books in seconds. It does so by using the processing power of idle server farms.