Which One of the Following Questions Represents the Cost of Message

Which one of the following questions represents the cost of message control?

A) What's the time value of the person tasked with creating content for the corporate blog?
B) What else could employees or volunteers have done if they weren't spending time contributing to the brand's social media activity?
C) Should employees be posting responses to irritated customers on Facebook when, without these tasks, they could have spent time on other revenue-generated tasks?
D) How fast should companies respond to crisis situations in social media?
E) Should a company set their Facebook walls to "Brand only" posts so that contributions from others are hidden to visitors?