Data table Roger's Frozen Pizzas uses FIFO process costing. Selected production and cost data follow for April 2018. Click the icon to view the production and cost data.) Read the requirements Requirement 1a. On March 31. the Prepping Department beginning Work.in.Process inventory was 60% complete for materiats and 80% complete for conversion costs. This means that for the beginning inventory % of the materlais and W of the conversion costs were added during April Requirement 1b. On Apri 30, the Prepping Department ending Work-in. Process Inventory was 70 s. complete for materiais and 20% complete for conversion costs This means that for the enting inventory conversion costs were added during Afril Units to account for: Total units to account for Total units to account for Units accounted for