The costing method that is properly classified for both external and internal reporting purpose is Using absorption costing, fixed manufacturing overhead costs are best described as Direct period costs. Indirect period costs. Direct product costs. Indirect product costs. Tucson Corporation has a joint process that produces three products: X, Y and Z. Each prod be sold at split-off or processed further and then sold. Joint-processing costs for a year amount $100,000. Other data follows: Processing Product X beyond the split-off point will cause profits to ___. decrease $32,000 increase $32,000 increase $16,000 decrease $16,000