Which of the Following Is the Most Accurate Definition of a Botnet

Multiple Choice

Which of the following is the most accurate definition of a botnet?

A) a fraudulent e-mail attack that targets a specific person or organization by personalizing the message
B) spider software used by a search algorithm to crawl various Web sites to return a query
C) a small text file passed to a Web browser on a user's computer by a Web server
D) a common platform used by search engines to index the contents of a Web site
E) destructive software robots working together on a collection of zombie computers via the Internet