下列关于动态NAT中地址池定义正确的是:
A、R1(config)#ip nat pool tdp 61.177.10.3 61.177.10.5 netmask 255.255.255.248
B、R1#ip nat pool tdp 61.177.10.3 61.177.10.5 netmask 255.255.255.248
C、R1(config)#ip nat pool tdp 61.177.10.3 61.177.10.5
D、R1#ip nat pool tdp 61.177.10.3 61.177.10.5