Which of the Following Statements About Botnets Is Not True

Multiple Choice

Which of the following statements about botnets is not true?

A) Eighty percent of the world's malware is delivered by botnets.
B) Botnets are often used to perpetrate DDoS attacks.
C) Ninety percent of the world's spam is delivered by botnets.
D) Botnets are often used for click fraud.
E) It is not possible to make a smartphone part of a botnet.