要启用PAT，需要在配置中添加下述（ ）命令。Ip nat pool Corp 198.18.41.129 198.18.41.134 netmask 255.255.255.248 Access-list 1 permit 192.168.76.64 0.0.0.31 （选择一项）
选项：

A:ip nat pool inside overload
B:ip nat inside source list 1 pool Corp overload
C:ip nat pool outside overload
D:ip nat pool Corp 198.41.129 net 255.255.255.0 overload