Which two conditions must exist in order to add a new link to an aggregation?

Which two conditions must exist in order to add a new link to an aggregation?

A.
The new link appears in the output of dladm show-phys.

B.
The new link may already support an active interface.

C.
The LACP policy must be set to L4.

D.
The link may currently be in any state.

E.
The new link has the same MAC address as the existing links.