Which statement about a botnet attack is true?

[answerhappygod]

Which statement about a botnet attack is true?

A. The botnet attack is an attack on a firewall to disable its filtering ability.
B. The botnet attack is a network sweeping attack to find hosts that are alive alive behind the filtering device.
C. The botnet attack is a collection of infected computers that launch automated attacks.
D. The owner of the infected computer willingly participates in automated attacks.
E. The botnet attack enhances the efficiency of the computer for effective automated attacks.