Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to get free virus protection software [title] Find out which version of windows you are running. [step] In general, most free anti-virus programs are intended for use with windows operating systems; however, new versions are updated for the latest windows versions. [substeps] For example, if you are still running windows xp, make sure you do not download a version only intended for windows 8 and higher.

Ending1: [title] Read the reviews carefully before downloading. [step] Tech websites go into detail about how to avoid paying for upgrades that you don't want and other common pitfalls. Ending2: [title] Check the ip address of your operating system. [step] A first step in getting free virus protection software is to get an ip address to support the software you are running. Ending3: [title] Connect your windows operating system to your computer using a usb cable. [step] Once the computer is connected, it will be opened by the name windows 8 or higher. Ending4: If this is the case, you may need to do a trial run for another version. [title] Restart your computer and run the software.

Answer format: ending1/ending2/ending3/ending4