Centric Sail Makers manufacture sails for sailboats. The company has the capacity to produce 35,000 sails per year, and is currently producing and selling 25,000 sails per year. The following information relates to current production: Sale price per unit Variable costs per unit: Manufacturing $175 60 20 Marketing and administrative Total fixed costs: Manufacturing Marketing and administrative $700,000 $300,000 If a special sales order is accepted for 5,500 sails at a price of $150 per unit, and fixed costs remain unchanged, what is the change in operating income? (Assume the special sales order will require variable manufacturing costs and variable marketing and administrative costs.) (use - if decrease, for increase keep the number as is)