What is the effect of configuring a port channel with one side set to auto mode and the other side set to desirable 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.

A. When one side of the port channel is configured with the auto mode and the other is configured with desirable mode, the EtherChannel is formed with PAgP.