Practice Objective 5-2 of the following equations, select all that are expressed correctly. O g. Sales = Net Income + Income Tax Expense + Operating Expenses + Beginning Inventory + Purchases - Ending Inventory. e. Cost of Goods Available for Sale = Cost of Goods Sold + Ending Inventory c. Gross Profit = Operating Expenses + Income (Loss) Before Income Tax O a. Gross Profit = Sales - Cost of Goods Available for Sale + Ending Inventory O f. Sales = Income (Loss) after tax + Operating Expenses + Cost of Goods Sold O d. Purchases = Cost of Goods Available for Sale - Beginning Inventory O b. Cost of Goods Sold = Beginning Inventory + Purchases