The Need for Digital Ad Placement Firms Is Supported by the Fact

Multiple Choice

The need for digital ad placement firms is supported by the fact that:

A) celebrities are charging exorbitant rates to add their voice to a brand's social media presence.
B) the blogosphere is very fragmented, which makes it difficult to determine where to place one's ads.
C) personal bloggers wield a great deal of influence over consumers when describing their brand experiences.
D) specialized vehicles like blogs and YouTube channels are selling their advertising space far too cheaply to be effective.