Which of the Following Statements About Comparative Advertising Is Most

Which of the following statements about comparative advertising is most accurate?

A) Comparative advertisements now constitute over 90 percent of all television ads.
B) Comparative advertisements often attract more consumer attention for the advertiser's brand.
C) Comparative advertisements can decrease the perceived quality of the advertiser's brand.
D) Comparative advertisements have been banned by the Federal Trade Commission.
E) Comparative advertisements can,and often do,cause more harm than good.