Implementing Cisco IP Switched Networks (SWITCH v2-0) (#73)

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

LACP negotiation must be disabled on both devices in the EtherChannel.
They require Cisco Discovery Protocol.
Each physical port in the EtherChannel must have the same speed and duplex settings.
LACP negotiation must be disabled on one device in the EtherChannel.
They use an MD5 hash for equal load balancing.
If the physical port configurations on the two devices are different, the ports are placed into the errdisabled state.