The command to specify the ethernet channel protocol is:

A.
channel-group {number}protocol [pagp | lacp]

B.
set ethernet channelprotocol [pagp | lacp]

C.
set ethertype [pagp | lacp]

D.
set channelprotocol [pagp | lacp]

E.
channelprotocol [pagp | lacp]

F.
set spantree protocol [pagp | lacp]