GM Uses Blogging to Communicate with Customers Online

GM uses blogging to communicate with customers online.GM's vice chairman Bob Lutz-an auto industry veteran and the company's director of product development-began a blog about the company in 2005.Once readers realized it really was Lutz and not an advertising ploy,they quickly warmed to the idea and appreciated his candid comments about GM and its competition.This is an example of:

A) a corporate blog.
B) an interactive Web site.
C) Narrowcasting.
D) a noncorporate blog.
E) a market concentration strategy.