An administrator needs to update the anti-virus, security patches, BIOS, and the web server software on a production system. Which of the following is the BEST method to accomplish this?（）

A.Update anti-virus, security patches, BIOS software, and then the web software.

B.Update the web software, security patches, anti-virus, and then the BIOS.

C.Update security patches, BIOS, web software, and then the anti-virus.

D.The order does not matter, only one change at a time should be done.