An AR2200 Router in the Company Network Cannot Boot

An AR2200 router in the company network cannot boot. In order to resolve this, the administrator wishes to update the VRP software. What should he/she do?

A) The administrator should use a console cable to connect the router and host, and directly upgrade the device.
B) The administrator should use FTP to transfer the VRP software, by configuring the AR2200 router as an FTP client.
C) The administrator should use DHCP to boot the AR2200, and then use the AR2200 router as a TFTP client to download the VRP software from the server.
D) The administrator should use the telnet command on the client to remote access the device, and upgrade the VRP software.