Refer to the exhibit. A junior engineer configured SNMP to network devices. Malicious users have uploaded different configurations to the network devices usingSNMP and TFTP servers.
Which configuration prevents changes from unauthorized NMS and TFTP servers?

A. access-list 20 permit 10.221.10.11 access-list 20 deny any log ! snmp-server group NETVIEW v3 priv read NETVIEW access 20 snmp-server group NETADMIN v3 priv read NETVIEW write NETADMIN access 20 snmp-server community Cisc0Us3r RO 20 snmp-server community Cisc0wrus3r RW 20 snmp-server tftp-server-list 20 B. access-list 20 permit 10.221.10.11 access-list 20 deny any log ! snmp-server group NETVIEW v3 priv read NETVIEW access 20 snmp-server group NETADMIN v3 priv read NETVIEW write NETADMIN access 20 snmp-server community Cisc0wrus3r RO 20 snmp-server community Cisc0Us3r RW 20 snmp-server tftp-server-list 20 C. access-list 20 permit 10.221.10.11 access-list 20 deny any log D. access-list 20 permit 10.221.10.11