All of the following are major categories of computer viruses except _________.

A. Macro viruses

B. File-infecting viruses

C. Script viruses

D. Trojan viruses

Answer: Option D

Solution(By Examveda Team)

All of the following are major categories of computer viruses except Trojan viruses. Trojan or Trojan horse is a type of malicious software. Trojan virus is designed to spy on the victims computer, access files or to extract sensitive data.