Which of the Following Statements Is True About User Agents

Multiple Choice

Which of the following statements is true about user agents?

A) They are also known as Web spiders.
B) They are agents that search to find the best price for a particular product a user wishes to purchase.
C) They are agents that continuously analyze large data warehouses to detect changes deemed important by a user.
D) They are agents that automatically perform a task for a user.
E) They are agents designed by spammers and other Internet attackers to farm e-mail addresses off Web sites or deposit spyware on machines.