What is the effect of configuring a port channel with one side set to on mode and the other side set to on mode?

A. The channel group will use PAgP.
B. The channel group will not be formed.
C. The channel group will use LACP.
D. An unconditional port-channel will be formed.

D. When both sides of the port channel are configured with the On mode, an unconditional port channel is created. This means there is no control protocol assisting the port channel.