Choose the source that would support or defend the following assertion. the cost of sponsoring our bake sale is much less than a radio ad campaign, and you will reach just as many people. a. a price-list of the bake sale items b. a newspaper article exploring alternatives to radio and television advertising c. a proposal from a local radio station detailing a popular ad plan d. a website that promotes using fund-raisers as team-building activities for clubs and teams e. none of the above