An example of a cost that is likely to have a variable cost behavior pattern is: Multiple Choice eBook 0 salespersons' salaries. 0 depreciation of plant equipment. 0 property taxes. 0 materials used in production, 1 A firm has revenues of $150,000, a contribution margin ratio of 35%, and fixed expenses that total $60,000. If revenues increase by $30,000, then: Multiple Choice eBook operating income will increase by $10,500. operating income will be 0. fixed expenses will increase by $12,000. () the contribution margin ratio will increase by 20%