Refer to the exhibit. Host A is unable to obtain an IP address from the DHCP server. Which procedure would solve this problem?

- Configure interface Fa0/0 of router RTA with the ip helper-address 10.1.2.1 command.
- Configure interface Fa0/0 of router RTA with the ip helper-address 10.1.2.10 command.
- Configure interface Fa0/1 of router RTA with the ip helper-address 10.1.2.10 command.
- Configure interface Fa0/0 of router RTA with the ip forward-protocol 67 command.
Explanation: Because host A and the DHCP server are on different IP networks, router RTA must be configured as a DHCP relay to forward DHCP messages by using the ip helper-address command. The command should be on the interface connecting the host and include the IP address of the DHCP server, 10.1.2.10.
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