The command frame-relay map ip 10.121.16.8 102 broadcast was entered on the router. Which of the following statements is true concerning this command？（）

• A、This command should be executed from the global configuration mode.
• B、The IP address 10.121.16.8 is the local router port used to forward data.
• C、102 is the remote DLCI that will receive the information.
• D、This command is required for all Frame Relay configurations.
• E、The broadcast option allows packets， such as RIP updates， to be forwarded across the PVC