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Complete this question by entering your answers in the tabs below. Calculate cost of goods available for sale and ending inventory under FIFO. Assume a periodic inventory system is used. Complete this question by entering your answers in the tabs below. Calculate cost of goods available for sale and ending inventory under FIFO. Assume a periodic inventory system is used. Required information [The following information applies to the questions displayed below.] The following are the transactions for the month of July. Required: a. Calculate cost of goods available for sale and ending inventory under FIFO. Assume a periodic inventory system is usec b. Calculate sales, cost of goods sold, and gross profit, under FIFO. Assume a periodic inventory system is used. Complete this question by entering your answers in the tabs below