What will the show mac address-table command on the OTV VDC indicate?

If no traffic was ever sent across the overlay, what will the show mac address-table command on the OTV VDC indicate?
A. invalid command
B. the MAC address of the local OTV join interface
C. the system IDs of all the local OTV edge devices
D. the system IDs of all the local and remote edge devices in the overlay
E. all the MAC addresses learned on the extended VLAN