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All else being equal, a $10.00 increase in a product's variable expense per unit accompanied by a 510.00 increase in its selling price per unit will Select one a have no effect on the total contribution margin, O b. decrease the degree of operating leverage. o increase the break-even volume. d. have no effect on the contribution margin catio. O e None of the given answers Based on analyzing the relationship of total factory overhead (Y) to direct labor hours txu the following riationship was found Y = $2,000 - 5.X. The $5 in the equation represents: Strict one: None of the answers given O b. Total fue factory overhead costs O Variable factory overhead costs per direct labor hour d. Total variable factory overhead costs Feed factory overhead costs per direct labor hour