5-A 6 Saved Help Save & Exi Check Castle Inc. has the following information: Month Cost A January February Amount $ 54,000 $ 75,600 Units 43,200 86,400 Month Cost B January February Amount $ 28,000 $ 56,000 Units 56,000 112,000 es Cost C Month January February Amount $ 27,000 $ 27,000 Units 40,000 80,000 Indicate whether these costs are variable, fixed, or mixed. Cost A Cost B Cost C