ABC Company uses perpetual inventory system in its merchandising business. The company has the following inventory transactions in November 2020: Required: 1. Using the FIFO method (without setting up a table), calculate: (a) the total units sold; (b) the total cost of goods sold; (c) the total units unsold; (d) ending inventory in $; (e) sales revenue; and (f) gross profit for November 2020 . Please show your calculation process. 2. Using the weighted average method, calculate (a) the cost of goods sold (b) the ending inventory ase show your calculations in a table as follows: 3. What is the gross profit for November 2020 using the weighted average method? 4. How much merchandise was purchased in November 2020 ? 5. How much is the merchandise available for sale in November 2020 ? Please show detailed calculations. Round to 2 decimal places for average cost per unit and round to the nearest dollar for all other answers. Part B: (4 marks) What is Net Realizable Value (NRV)? How to adjust the inventory if NRV is lower than the cost? How to adjust the inventory if NRV is higher than the cost