Which two statements about manually-configured LACP EtherChannels are true? (Choose two.)

Which two statements about manually-configured LACP EtherChannels are true? (Choose two.)
A . LACP negotiation must be disabled on both devices in the EtherChannel
B . They require Cisco Discovery Protocol.
C . Each physical port in the EtherChannel must have the same speed and duplex settings.
D . LACP negotiation must be disabled on one device in the EtherChannel.
E . They use an MD5 hash for equal load balancing.
F . If the physical port configurations on the two devices are different, the ports are placed into the errdisabled state

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Answer: AC