ManchesterManufacturingIndustries(MMI)manufacturesandsellslaserprintercartridgesfor$85each.Fixedoperatingcostsare$580,000forupto40,000unitsofoutput.Fixedinterestcostsarecurrently$80,000peryear.Variablecostsare$55percartridge.ThebreakevenquantityofunitsalesforMMIisclosestto: A: 8,333 B: 12,500 C: 22,000