Corvette Products Corporation manufactures a specialty barbecue sauce. Corvette has the capacity to manufacture and sell 10,000 cases of sauce each year but is currently only manufacturing and selling 9,000. The following costs relate to annual operations at 9,000 cases: Corvette normally sells its sauce for $30 per case. A local school district is interested in purchasing Corvette's excess capacity of 1,000 cases of sauce but only if they can get the sauce for $15 per case. This special order would not affect regular sales or total fixed costs or variable costs per unit. If this special order is accepted, Corvette's profits for the year will: increase by $600 decrease by $4,000 decrease by $6,600 decrease by $1,000