Refer to the exhibit. A network administrator logs into the router using TACACS+ username and password credentials, but the administrator cannot run any privileged commands. Which action resolves the issue? 

Answer options:

A. Configure the username from a local database
B. Configure TACACS+ synchronization with the Active Directory admin group
C. Configure an authorized IP address for this user to access this router
D. Configure full access for the username from TACACS+ server

D