Which of the Following Is an Advantage of Online Communications

Which of the following is an advantage of online communications for marketers?

A) Consumers cannot effectively screen out your messages.
B) Companies can accurately track how effective their ads are because software filters out all bogus hits.
C) Companies can offer tailored information or messages that engage consumers.
D) Advertisers maintain complete control over the message.
E) Advertisers do not need to worry as much about context.