Surf Company can sell all ofthe two surfboard models it produces, but it has only 476 direct labor hours available. The Glide model requires 2 direct labor hours per unit. The Ultra model requires 4 direct labor hours per unit. Contribution margin per unit is $276 for Glide and $452 for Ultra. (a) Compute the contribution margin per direct labor hour for each product. (b) Determine the best sales mix and the resulting contribution margin. Complete this question by entering your answers in the tabs below. Required A Required B Compute the contribution margin per direct labor hour for each product. Contribution margin per direct labor hour _ _ Required B >