only part D please

| 35,000 E5.18 (LO 1) Khan Inc. has conducted the following analysis related to its product lines using a traditional costing system (volume-based) and an activity-based costing system. Both the traditional and activity-based costing systems include direct materials and direct labour costs. Total Costs Products Sales Revenue Traditional ABC Product $180,000 $55,000 $50,000 440X Product 160,000 50,000 137Y Product 70,000 15,000 2495 Instructions a. For each product line, calculate operating income using the traditional costing system. b. For each product line, calculate operating income using the activity-based costing system. c. Using the following formula, calculate the percentage difference in operating income for each of Khan's product lines: [Operating Income (ABC) - Operating Income (traditional cost)] = Operating Income (traditional cost). (Round the percentage to two decimals.) d. Provide a rationale for why the costs for Product 440X are approximately the same using either the traditional or activity-based costing system. 35,000