Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to download videos safely [title] Make sure your web browser is up to date. [step] Keeping your browser up to date ensures the latest security fixes are active while you browse the web. Many modern browsers will update themselves in the background as they become available.

Ending1: Following all the updated software has the potential of damaging your browsers and forcing them to update faster. [title] Avoid browsing files where you're unable to retrieve them. Ending2: [title] Install' nvchd' on your computer. [step] Nvchd doesn't take long to install, as it has been known to open automatically and allow you to download the files at any time. Ending3: [substeps] Older versions of internet browsers may still support video cache upgrades. Make sure your browser is fully powered on while you browse. Ending4: [substeps] Chrome users can go to " menu] settings] about " to update. Chrome will also flag suspicious files when they are downloaded with a prompt if you want to keep it.

Answer format: ending1/ending2/ending3/ending4