(b) Pfriser is a shoes manufacturer. Data on the number of units in inventory at the beginning of the year, unit purchases, and unit sales are shown below: Beginning inventory consists of 200,000 units at a cost of RM20.00 each. 1,000,000 units were purchased at a cost of RM10.00 each 800,000 units were sold for RM36.00 each Required: Calculate the cost of goods sold and ending inventory of Pfirser separately for both the (1) FIFO and (2) AVCO methods of inventory valuation. (6 marks) What is the impact of these methods of inventory valuation for income determination and financial position for Pfriser? (4 marks) Describe the use of DuPont analysis. Is it possible for a company to have an increase in Return on Assets (ROA) when its operating profit margin is decreased? Explain. (10 marks) (d) Discuss why agency problems only exist in large corporations. Assess the relationship between agency theory and earnings quality (20 marks) [Total: 30 marks)