Which of the following applications work as mass-emailing worms? Each correct answer represents a complete solution. Choose two.

Nimda is a multi-vector worm that uses email as a primary propagation method, automatically sending infected attachments to addresses harvested from the compromised host, qualifying it as a mass-emailing worm alongside its other spread vectors such as network shares and web clients.

The ILOVEYOU worm spread in 2000 by emailing itself to every contact in a victim's Microsoft Outlook address book using an enticing subject line, making it one of the fastest-spreading and most destructive mass-emailing worms ever recorded.

The Melissa virus is primarily a Microsoft Word macro virus that attaches itself to documents and uses email to deliver those documents - it is most accurately classified as a macro virus rather than a standalone mass-emailing worm by design and propagation mechanism.

The Chernobyl virus (CIH) is a file-infecting virus that overwrites hard drive sectors and BIOS flash memory on its trigger date - it spreads through infected executable files and has no email-based mass-mailing capability.