While browsing the Internet, an administrator notices their browser behaves erratically, appears to
download something, and then crashes. Upon restarting the PC, the administrator notices
performance is extremely slow and there are hundreds of outbound connections to various
websites. Which of the following BEST describes what has occurred?

A.
The PC has become part of a botnet.

B.
The PC has become infected with spyware.

C.
The PC has become a spam host.

D.
The PC has become infected with adware.

Explanation: