Which configuration option configures a TACACS+ server to be used for authentication on the Cisco ASR 5000?
A. configure tacacs mode server priority 1 ip-address 10.10.10.10 password cisco123 exit aaa tacacs+
B. configure tacacs mode server priority 1 ip-address 10.10.10.10 service authorization password cisco123 exit aaa tacacs+
C. configure tacacs mode server priority 5 ip-address 10.10.10.10 service authentication password cisco123 exit aaa tacacs+
D. configure tacacs mode server priority 1 ip-address 10.10.10.10 shared-secret cisco123 exit aaa tacacs+