What is it called when a customer contracts with RMK Media Services to manage all aspects of media, including handling the billing and accounting of their advertising spend? Please choose the correct answer.

What is it called when a customer contracts with RMK Media Services to manage all aspects of media, including handling the billing and accounting of their advertising spend? Please choose the correct answer.
A . Job Distribution Strategy
B . Agency of Record
C . Campaign Management
D . Media Management

Answer: B