Sandra Sales sells golf bags and uses a perpetual inventory system. Sandra's inventory records show that at March 1, there were 33 units on hand at a cost of $138 each. Transactions related to the purchase and sale of golf bags in March were as follows: For each of the following cost formulas, calculate the ending inventory at March 31 and the cost of goods sold for the month of March. (Round the weighted average cost per unit and final answers to 2 decimal places, e.g. 5,275.25) Assume that Sandra is motivated to report the highest profit possible. Which method will they prefer? Which method would they prefer, if the cost of golf bags was increasing, instead of decreasing