cost which remains constant per unit at various levels of activity is aa. manufacturing costb

cost which remains constant per unit at various levels of activity is aa. manufacturing costb. Variable costc. fixed costd. Mixed cost————————————————-Two costs at Bradshaw Company appear below for specific months of operation.MonthAmountUnits ProducedDelivery costsSeptember$40,00040,000October55,00060,000UtilitiesSeptember$84,00040,000October126,00060,000Which type of costs are these?Delivery costs and utilities are both mixed.Utilities are mixed and delivery costs are variable.Delivery costs are mixed and utilities are variable.Delivery costs and utilities are both variable.———————————————–An increase in the level of activity will have the following effects on unit costs for variable and fixed costs:Unit Variable CostUnit Fixed CostRemains constantDecreasesDecreasesRemains constantIncreasesDecreasesRemains constantRemains constant——————————Greg’s Breads can produce and sell only one of the following two products:OvenContributionHours RequiredMargin Per UnitMuffins0.2$3Coffee Cakes0.3$4The company has oven capacity of 1,200 hours. How much will contribution margin be if it produces only the most profitable product?$24,000$12,000$16,000$18,000