M5-7 (Algo) Estimating Cost Behavior [LO 5-2,5-3] Castle Inc. has the following information: Cost A Month January February Amount $ 44,000 $ 44,000 Units 40,000 80,000 Month Cost B January February Amount $ 88,000 $123,200 Units 70,400 140,800 Month Cost C January February Amount $ 96,000 $ 192,000 Units 192,000 384,000 Indicate whether these costs are variable, fixed, or mixed. Cost A Cost B Cost C