Which OAM tool can be used to dynamically learn the MAC address of a CE device connected to a SAP wi

Which OAM tool can be used to dynamically learn the MAC address of a CE device connected to a SAP within a VPLS service?

A. oam mac-populate
B. oam mac-ping
C. oam mac-trace
D. oam svc-ping

E. oam cpe-ping