Companies Can Interface with Social Networks in All of the Following

Companies can interface with social networks in all of the following ways except:

A) Use search engine optimization (SEO) to increase search engine ranking.
B) Use existing public social networks,such as Facebook or MySpace,or virtual worlds,such as Second Life to create pages and microcommunities.
C) Create an in-house private social network and then use it for communication and collaboration among employees and retirees or with outsiders.
D) Conduct business activities in a business-oriented social network,such as LinkedIn,or sponsor such a site.