This is a test of commonsense with single/multi-choices. Complete the next sentence:

How to deal with computer virus infection
Make sure that your antivirus software is the latest update.
If necessary, download the update from another computer and update it manually.
Disconnect from the internet or local area network (lan).

Choose from:
A). If you have not already, disconnect any connection and plugging it back in makes it more likely that a virus will be transmitted to your computer. Install a new version of anti virus software for any new viruses.
B). If there is a problem with your computer, talk to your dispatcher as soon as possible. Inform your staff member of the problems with your anti virus software.
C). Make sure your pc is turned off. Finally, create an alternate location for the virus to live.
D). Start windows in safe mode if it is not running (when turning on your computer, keep pressing f8 as soon as the computer starts running, then choose' safe mode' from the menu). Run a full anti-virus scan.
The answer is:
D).