Which of the Following Is True About Advertising Spending in the United

Which of the following is true about advertising spending in the United States?

A) Firms spend more money for advertising business products than consumer products.
B) Advertising spending in the United States was $450 billion in 2015.
C) Firms spend an average of only about 2.5 percent of their sales dollars on advertising.
D) Advertising in the United States accounts for roughly 50 percent of worldwide advertising spending.
E) The advertising spending as a percent of sales dollars remains same for all product categories.