6. Arch manufactures a product with the following manufacturing cost hierarchy for its only current product: Cost Unit. Batch Product. Facility $20/unit $500/batch $10,000/year $50,000/year Next year Arch plans to manufacture 50,000 units of product in batches of 500 units. Arch's predicted manufacturing costs for next year are: a. b. c. d. $1,560,000 $1,500,000 $1.110,000 S660,000