A Drawback of Sponsorships Is That

A drawback of sponsorships is that:

A) it is difficult to evaluate the effectiveness of a particular sponsorship.
B) it does not help enhance a company's public image.
C) it is not approved by the public.
D) it does not have the ability to involve customers and prospects.
E) its access to customers is cluttered by competition, irrespective of the venue of an event.