148. What type of malware that is capable of infect a file with an encrypted copy of itself, then modify itself when decoded to make almost impossible to detect by signature-based virus scanner?

Вариант ответа 1 - A. Computer virus

Вариант ответа 2 - B. Trojan house

Вариант ответа 3 - C. Computer worm

Вариант ответа 4 - D. Polymorphic virus