TASK Understanding the true costs of serving a customer is an invaluable information that a manager needs for making successful managerial decision to improve the performance of a business. 2 Required: i. Provide a brief account of the major emphasis of the Activity Based Management (ABM) models. ii. Explore the usefulness of activity-based costing in the implementation customer profitability analysis (CPA) in service industries. iii. Discuss the possible drawbacks of ABC system despite being considered as a sufficient costing method in service industries. iv. Using a hypothetical case, demonstrate how costs are allocated to different customer groups under ABC in implementing CPA. .