Refer to the exhibit.

Which statement about the configuration commands is true?

A.
These are valid configuration commands and the switch accepts them.

B.
These commands return an error because of a mismatch between the Dot1x order
and priority.

C.
Changing the default order of authentication does not introduce additional
authentication traffic in the network.

D.
By default, the switch attempts MAB and then Dot1x.

Explanation:
http://www.cisco.com/c/en/us/products/collateral/ios-nx-ossoftware/identity-based-networking-service/application_note_c27-573287.html