Bluebird Manufacturing has received a special one-time order for 17,000 bird feeders at $5,00 per unit. Bluebird currently produces and sells 75.000 units at $9.00 each. This level represents 80% of its capacity. Production costs for these units are $5.50 per unit, which includes $4.25 of variable costs and $3.25 of fixed costs. If the special offer is accepted, there will be no incremental fred cost if Bluebird accepts this additional business, the effect on income will be: Multiple Choice $85.000 inctease \$8.500 tecrease. 512,750 nciease 572.250 decrease. $72.250 increase