please help

Bluebird Manufacturing has recelved a special one-time order for 15,900 bird feeders at $3.90 per unit. Bluebird currently produces and sells 75.000 units at $7.90 each. This level represents 80% of its capacity. Production costs for these units are $4.40 per unit, which includes $3.15 of variable costs and $2.15 of fixed costs. If the special offer is accepted, there will be no incremental fixed cost. If Bluebird accepts this additional business, the effect on income will be: Multuple Choice $50,095 decrease: $50.085 incredse 5t1,92.5 increase. 57.950 decrease 562.010 increase