Which three combinations are valid LACP or static configurations that will set up a channel?
(Choose three.)

A.
On/On

B.
On/Auto

C.
Passive/Active

D.
Desirable/Auto

E.
Active/Active

F.
Desirable/Desirable

Explanation:
There are only three valid combinations to run the LACP link aggregate, as this table shows:
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active
active
Recommended.
active
passive
Link aggregation occurs if negotiation is successful.
on
on
Link aggregation occurs without LACP. Although this works, this combination is not recommended.
Note: By default, with the configuration of an LACP channel, the LACP channel mode is passive.