A network administrator has configured source NAT, translating to an address that is on a locally connected subnet.The administrator sees the translation working, but traffic does not appear to come back.<br /> What is causing the problem?()
A、The host needs to open the telnet port.
B、The host needs a route for the translated address.
C、The administrator must use a proxy-arp policy for the translated address.
D、The administrator must use a security policy, which will allow communication between the zones.