Use the following information to complete this exercise: sales, $950$ units for $$20,400$; beginning inventory, $700$ units; purchases, $800$ units; ending inventory, $550$ units; and operating expenses, $$7,800.$

Required:

Complete the table for each situation. In Situations A and $B($costs rising$),$ assume the following: beginning inventory, $700$ units at $$8=$$$5,600$; purchases, $800$ units at $$10=$$$8,000.$ In Situations $C$ and $D($costs falling$),$ assume the opposite; that is$,$ beginning inventory, $700$ units at $$10=$$$7,000$; purchases, $800$ units at $$8=$$$6,400.$ Use periodic inventory procedures.