Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to install microsoft security essentials to your computer [title] Visit the security essentials website. [step] It should be the first result for " microsoft security essentials " in any web search. Security essentials is a free program for windows that protects against malwares and viruses.

Ending1: [title] Click on any microsoft security essentials option at the top of the page to see all of its available updates. [step] You should also click " install ". Ending2: [substeps] You should only have one antivirus installed on your system at a time. [title] Click the " download now " button. Ending3: It is available on all major web platforms and is easily found in almost any store. [substeps] You should download security essentials if you have ever found apps that violate the security function of your computer. Ending4: There are also tutorials online to help guide you through the basics of microsoft security essentials. [title] Click on " summary " on the drop-down menu and select " hardware or features ", then " windows security essentials 1.5 ".

Answer format: ending1/ending2/ending3/ending4