Table 5.4 shows the cost information for a product at the 15,000-units level. Table 5.4 Incremental Costing Exercise Quantity 15,000 FC ($) 3,000,000 VC ($) TC ($) IC ($) MC ($) 1,500,000 ? 20,000 ? ? ? ? ? 30,000 ? ? ? ? ? 1. What are the incremental and marginal costs for producing 5,000 additional units? 2. Suppose that, at a new production level of 30,000, the fixed cost increases to $4.5 million, what are the incremental and marginal costs for the additional 10,000 units?