E4-8B Tapper Clothing Company manufactures its own designed and labeled sports attire and sells its products through catalog sales and retail outlets. While Tapper has for years used activity-based costing in its manufacturing activities, it has always used traditional costing in assigning its selling costs to its product lines. Selling costs have traditionally been assigned to Tapper's product lines at a rate of 80% of direct material costs. Its direct material costs for the month of March for Tapper's "high intensity" line of attire are $390,000. The company has decided to extend activity-based costing to its selling costs. Data relating to the "high intensity" line of products for the month of March are as follows. Instructions (a) Compute the selling costs to be assigned to the "high-intensity" line of attire for the month of March: (1) using the traditional product costing system (direct material cost is the cost driver), and (2) using activity-based costing. (b) By what amount does the traditional product costing system undercost or overcost the "high-intensity" product line? (c) Classify each of the activities as value-added or non-value-added