The operating revenues of the three largest business segments for Time Warner, Inc., for a recent year follow. Each segment includes a number of businesses, examples of which are indicated in parentheses. Time Warner, Inc. Segment Revenues (in millions) Turner (cable networks and digital media) $92,600 Home Box Office (pay television) 23,500 Warner Bros. (films, television, and videos) 81,200 Assume that the variable costs as a percent of sales for each segment are as follows: Turner 20% Home Box Office 24% Warner Bros. 20% a. Determine the contribution margin and contribution margin ratio for each segment from the information given. When required, round to the nearest