For which two reasons would you enter these commands in a Cisco Nexus 5000 Series switch? (Choose two.)
n5k(config)# int ethernet 1/21
n5k(config-if)# priority-flow-control mode on
16
A.
The peer device requires this configuration for proper spanning-tree operation.
B.
The peer device does not support LLDP.
C.
The Cisco Nexus 5000 chassis is not DCBX capable.
D.
Unexpected DCBX negotiation occurred with the peer device.
E.
UDLD is also configured on interface ethernet 1/21.
Explanation: