What Is Spyware

What is spyware?

A) a form of malicious software that infects your computer and asks for money
B) a new ransomware program that encrypts your personal files and demands payment for the files' decryption keys
C) software that allows Internet advertisers to display advertisements without the consent of the computer user
D) a special class of adware that collects data about the user and transmits it over the Internet without the user's knowledge or permission