Your business expands and you open new offices in five other cities several miles away. You have chosen frame relay as your WAN transport technology. Which of the following is/are true regarding your...

Your business expands and you open new offices in five other cities several miles away. You have chosen frame relay as your WAN transport technology. Which of the following is/are true regarding your network?

A. The router at the headquarters building will require a minimum of five interfaces for WAN connectivity.

B. The router at the headquarters building only requires one interface for WAN connectivity.

C. The headquarters router uses between one and five different DLCIs when building a frame for WAN transport.

D. The headquarters router uses only one DLCI for every frame sent to the WAN.