Based on a predicted level of production and sales of 12,000 units, a company anticipates reporting operating income of $28,000 after deducting variable costs of $72,000 and fixed costs of $8,000. Based on this information, the budgeted amounts of fixed and variable costs for 15,000 units would be:.a. $8,000 of fixed costs and $72,000 of variable costs. b. $8,000 of fixed costs and $90,000 of variable costs. c. $10,000 of fixed costs and $72,000 of variable costs. d. $10,000 of fixed costs and $90,000 of variable costs. e. $8,000 of fixed costs and $81,000 of variable costs.