Which of the following can contain malware? First we need to identify on how such computer malware are/is transmitted. To our knowledge it spreads on unauthorized download of pirated games, downloading something without a confirmed publisher and clicking random links in the internet.
All of these can be done using (A) Installer (B) Email (C) Downloads.ANSWER:
Therefore, the answer to the question is (D) All.Additional Note:
You can avoid such instances by just installing a free antivirus software which will scan your computer regularly and will warn you if it does detect a malware.