Which of the Following Is a Challenge of Marketing Through

Multiple Choice

Which of the following is a challenge of marketing through online social networks?

A) Results are hard to measure.
B) Users seldom have control over the online social networks.
C) Most existing networks are already controlled by major corporations and therefore do not favor competitors.
D) It is difficult to get the approval of the online advisory board to post an ad in a social network.
E) Marketing via online social networks is expensive and time-consuming.