Implementing Cisco IP Switched Networks (SWITCH v2-0) (#533)

Refer to the exhibit. An engineer is configuring an etherchannel between two switches, he notices the error message on Switch 2 (error message channel-misconfiguring error), based on the output what is the problem?

the etherchannel on the switch 1 using incorrect member port
the etherchannel interface of switch 1 is not configured
the etherchannel protocol on switch 1 is not correct
the etherchannel interface of switch 2 is not configured