Which of the following describes a trojan horse

I don't see the options you have to choose from, but I can explain a Trojan horse so you can decide which answer may be best fit:

Essentially, a Trojan horse is something negative disguised as something positive to deceive a victim. For example, a Trojan horse computer virus is usually advertised as something different, that gives you instructions that if you follow, your computer could be destroyed!

Hope this helps :)