The cost of fixing the spoiled units should be treated normal when: These units are not expected from production These units are produced None of these These units are expected from production Identify the product cost for a business from the following: . Rent of sales building None of these Rent of on factory building Rent of head office building Identify the correct equation to calculate profit under marginal costing: n Net profit = sales + fixed and variable selling and office expense Net Profit = sales - variable cost - fixed cost Net Profit = sales - cost of goods sold Net Profit = sales + cost of goods sold - fixed and variable selling and office expense