Cover-to-Cover Company is a manufacturer of shelving for books. The company has compiled the following cost data, and wants your help in determining the cost behavior. After reviewing the data, complete requirements (1) and (2) that follow. Total Total Total Machine Units Lumber Utilities Depreciation Produced Cost Cost Cost 6,000 shelves $66,000 $7,900 $135,000 12,000 shelves 132,000 14,800 135,000 24,000 shelves 264,000 28,600 135,000 30,000 shelves 330,000 35,500 135,000 2. For each cost, determine the fixed portion of the cost, and the per-unit variable cost. If there is no amount or an amount is zero, enter "O". Recall that, for N = Number of Units Produced, Total Costs = (Variable Cost Per Unit x N) + Fixed Cost. Complete the following table with your answers. Round variable portion of cost (per unit) answers to two decimal places. Fixed Portion Variable Portion Cost of Cost of Cost (per Unit) Lumber Utilities Depreciation