Borges Machine​ Shop, Inc., has a​ 1-year contract for the production of 200,000 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​ efficient, dedicated machine​ (DM). The cost data​ follow: ​ (GPE) (FMS) (DM) Annual contracted units 200,000 200,000 200,000 Annual fixed cost $ 100,000 $ 200,000 $ 480,000 Per unit variable cost $ 18.00 $ 14.00 $ 13.00 The option GPE is best when the contracted volume is below _______ units ​(enter your response as a whole​ number)