私网设备A的IP地址是192.168.1.1/24，其对应的公网IP 是2.2.2.1；公网设备B的IP 地址是2.2.2.5。现需要设备A对公网提供Telnet服务，可以在NAT设备上使用下列哪项配置？

【单选题】
A acl number 2000<br />
rule 0 permit source 192.168.1.1 0.0.0.255<br />
nat address-group 1 2.2.2.1<br />
interface Ethernet 0/1<br />
nat outbound 2000 address-group 1<br />
B acl number 2000<br />
rule 0 permit source 192.168.1.1 0.0.0.255<br />
nat address-group 1 2.2.2.1<br />
interface Ethernet 0/1<br />
nat outbound 2000 address-group 1 no-pat<br />
C nat server protocol telnet global 2.2.2.1 inside 192.168.1.1<br />
D nat server protocol tcp global 2.2.2.1 telnet inside 192.168.1.1<br />
E nat server protocol tcp global 2.2.2.1 23 inside 192.168.1.1 23<br />

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