Briefing Huawei Knowledge

How can this be achieved?

An administrator wishes to update the VRP software of company’s AR2200 router. How can this be achieved?
(Choose three)

A.
The administrator can use FTP to transfer the VRP software, with the AR2200 router as the FTP client.

B.
The administrator can use FTP to transfer the VRP software, with the AR2200 router as the FTP server.

C.
The administrator can use TFTP to transfer the VRP software, with the AR2200 router as the TFTP server.

D.
The administrator can use TFTP to transfer the VRP software, with the AR2200 router as the TFTP client.

Explanation: