About judging whether MAC address entries of PTN device are normal according to networ

k situation on site, which of the following is wrong？()

A.Execute Show lacp sys-id to check MAC address of local device rack, which is just the static MAC used for basic configuration of the device

B.Execute command show mac to check service MAC of peer device.

C.Execute command show lldp neighbor to display MAC of local device port, interconnected peer device port and its rack.

D.Execute show arp to show arp entries, which mark mac address and interface.