Which statement about the use of PAgP link aggregation on a Cisco switch that is running Cisco
IOS Software is true?

A.
PAgP modes are off, auto, desirable, and on. Only the combinations auto-desirable, desirabledesirable, and on-on allow the formation of a channel.

B.
PAgP modes are active, desirable, and on. Only the combinations active-desirable, desirabledesirable, and on-on allow the formation of a channel.

C.
PAgP modes are active, desirable, and on. Only the combinations active-active, desirabledesirable, and on-on allow the formation of a channel.

D.
PAgP modes are off, active, desirable, and on. Only the combinations auto-auto, desirabledesirable, and on-on allow the formation of a channel.