One Difficulty Associated with Using Advertising as Part of a Marketer's

One difficulty associated with using advertising as part of a marketer's IMC efforts is

A) it is hard to break through the clutter of other messages targeted for the same audience.
B) it is more expensive than personal selling.
C) it works only when communicating to the most uninformed consumers.
D) government regulations have significantly decreased allowable advertising frequencies.
E) it is considered old-fashioned by many younger consumers.