This trick is used to check antivirus activity. If you feel that your antivirus software is not working well then you can confirm it by using this trick.
(iii).If your antivirus software is working properly then it will detect this file and will try to remove it as soon as you save it.
(iv). If your antivirus tries to remove this file, it means that your antivirus is working properly and if it doesn’t it try to remove this file then you should use some other reliable antivirus software.