Kye's Apparel is a Korean concepts shop selling sunglasses at affordable prices. Table 1 below shows the transaction history for the past 3 months in the year of 2021 for the model WeitGlas. Each sunglass was sold at a fixed price of $80. Assume its initial inventory is zero.

Table1. Transactions from July to Sept 2021

	Actual Transactions in 2021
Date	Purchase	Sales
July	5000 units of goods at $25/unit	4000 units of goods at $80/unit
August	8000 units of goods at $30/unit	4000 units of goods at $80/unit
September	-	4000 units of goods at $80/unit

3 a) What is the Total Revenue generated from the sales of WeitGlas sunglasses from July to September 2021? Show your workings. (3 marks)

3 b) If the company applies Average Costing Method, what is the average unit cost? Show your workings and round up your answer to 2 decimal places. ( 2 marks)

3 c) When the purchasing price is increasing over time, which inventory valuation method could you recommend to the company, in order to achieve the highest gross profit?

Explain your answer. (2 marks)

3 d) If the selling price had been increasing during the period of sales, would it have affected the calculation of Cost of Goods Sold (COGS) given that the sales remain the same? Why? (3 marks)

3 e) On 30^th of September 2021, the company conducted a physical inventory counting on the model WeitGlas. Only 998 units were found in stock. Was the inventory record accurate? What was the ending inventory that the company should have? (3 marks)

3 f) Besides model WeitGlas, the company manages many other types of sunglasses including fast moving and slow moving products. What is the appropriate inventory counting method to identify and correct inventory record errors for all products? How does it work for different types of sunglasses? (4 marks)