Which of the Following,if True,would MOST Seriously Weaken the Argument

Multiple Choice

Which of the following,if true,would MOST seriously weaken the argument for using the Internet as the medium of advertising?

A) Countries with restrictive regimes are yet to free this medium from controls over political content.
B) Consumers are extremely frustrated with annoying pop-up ads that affect the quality of browsing.
C) Studies show that customers tend not to notice Internet ads that are not intrusive in nature.
D) The interactive capabilities of Internet ads are rarely being used in a creative manner.
E) People who are online are also known to engage in media multi-tasking.