Borges Machine Shop, Inc. has a 1-year contract for the production of 250,000 gear housings for a new off-road vehicle. Owner Luis Borges hopes the contract will be extended and the volume increased next year. Borges has developed costs for three alternatives. They are general-purpose equipment (GPE), flexible manufacturing system (FMS), and expensive, but officient, dedicated machine (DM). The cost data follow: General Purpose Flexible Manufacturing Dedicated Equipment (GPE) System (FMS) Machine (DM) Annual contracted units 250,000 250,000 250,000 Annual fixed cost $150,000 $225,000 $500,000 Per unit variable cost $16.00 $14.00 $13.00 The option GPE is best when the contracted volume is below units (enter your response as a whole number) rect