In the Summer of 2005, Several Web Sites Were Focusing

In the summer of 2005, several Web sites were focusing on the promotion of the new movie Firefly based on the cancelled-too-quickly television show. What is happening is an increasing number of people are becoming aware of the show through various personalized Web sites and chat rooms and are spreading info about the TV show and the movie to others. The initiator of much of these messages is the movie production company. This is an example of:

A) the use of blogs.
B) circular marketing.
C) word-of-mouth communication.
D) echoing.
E) circular communication.