3.Propose an expansion strategy. Which information, that based on the current costing system or that based on the ABC system, is more useful? Why? What other information do you want to know before making a definitive recommendation on an expansion strategy? 4.What are the challenges faced when allocating overhead costs to products? Can these challenges identified be overcome by using ABC? Explain using your own words. Your answer should INCLUDE an explanation of the implications of the hierarchy of overhead costs and activities.