Apply the high-low method of cost analysis to the three cost groups below. Then answer the following for each group: 1) Variable Cost per Unit, 2) Fixed Cost Portion, and 3) whether the cost is a variable, fixed, or mixed. Costs per Level of Production Volume (Applicable Group A Group B to each group) Costs Costs Responses Variable Fixed Variable Cost Cost Fixed Group Group Per Unit Portion Mixed Costs Group A $ 2.000 $2,600 $1,000 $2,400 12,000 $12,600 $6,000 $2,400 16.000 $16.600 $8,000 $2,400 20,000 $20,600 $10,000 $2,400 Group C Costs