What should be done before responding to comments made on social media sites?

A) Use an automated reputation analysis to better gauge consumer reaction.
B) Respond based on a predetermined public relations plan.
C) Evaluate the source, the tone and the content, and then choose a response that fits.
D) Use anonymous responses to counteract the negative information, and then post a company response that supports the anonymous response.
E) Contact the writer privately to determine the real source of discontent, and then post an appropriate response.