Refer to the exhibit. You have configured an NDAC seed switch as shown, but the switch is failing to allow other switches to securely join the domain
What command must you add to the seed switch’s configuration to enable secure RADIUS communication?
A. Seed-Switch(config)#radius.server host 10.1.1.2 auth-port 1812 acct-port 1813 test username ndac-test pac key Cisco123
B. Seed-Switch(config)#radius-server vsa send accounting
C. Seed-Switch(config)#aaa preauth
D. Seed-Switch(config)#no dot1x system-auth-control
E. Seed-Switch(config)#radius-server host non-standard
F. Seed-Switch(config)#aaa authentication dot1x default group local
