Given the following: Number Cost per purchased unit Total January 1 inventory 45 $ 3 $ 135 April 1 65 6 390 June 1 55 7 385 November 1 60 225 8 480 $ 1,390 a. Calculate the cost of ending inventory using the weighted-average method (ending inventory shows 66 units). Note: Round the "average unit cost" and final answer to the nearest cent. Cost of ending inventory b. Calculate the cost of goods sold using the weighted-average method. Note: Round your intermediate calculations and final answer to the nearest cent. Cost of goods sold