Refer to the exhibit. Which two statements about the flag of the EtherChannel is true? (Choose two.)
A. Flag S indicates Layer 2 is operational.
B. Flag U indicates EtherChannel is operational.
C. Flag R indicates Layer 2 is operational.
D. Flag U indicates Layer 2 is operational.
E. Flag H indicates EtherChannel is operational.
https://www.cisco.com/c/en/us/support/docs/lan-switching/etherchannel/98469-ios-etherchannel.html