The author of the passage suggests which of the following about the "advertisers" mentioned in the passage? A. They assumed that advertising in African American newspapers would not significantly increase the sales of their products. B. They failed to calculate accurately the circulation of African American newspapers. C. They did not take African Americans' newspaper reading into account when making decisions about where to advertise. D. They avoided African American newspapers partly because of their sensationalism. E. They tried to persuade African American newspapers to lower the rates charged for advertising.