Use the following information for the next 3 questions: Brad Sherwood Corporation sells two types of computers: one is designed for audio applications and the other for video applications. Sherwood incurs $300,125 in fixed costs. ut of Per unit data Selling price Variable costs Contribution margin Sales mix Audio computer Video computer $1,500 $1,750 $1,100 $1,200 $400 $650 75% 25% The weighted-average contribution margin is: Select one: a. $437.50. b. $475.00 c. $1,125.00 d. $375.00