Which of the following best describes spyware?

A$.$

It monitors the actions you take on your machine and sends the information back to its originating source

B$.$

It monitors user actions and personal preferences and then sends pop$-$ups to the user that match their tastes

C$.$

It is a program that attempts to damage a computer system and replicate itself to other computer systems

D$.$

It is a malicious program disguised as legitimate software