Disadvantage of Using the Internet as an Advertising Medium Is

disadvantage of using the Internet as an advertising medium is

A) as a relatively new medium, it has attracted limited use.
B) it is difficult to translate messages that can be used in social media networks like Facebook and Twitter.
C) the medium is new so standards for various formats are still evolving.
D) it often creates more traffic than a firm can actually handle.
E) pay-per-click search ads on Google are expensive and ineffective.