20) Which of the following statements about the key features of cost accounting and cost management is TRUE? * The costing system allocates direct O costs and traces indirect costs to products. Managers need to understand that O period costs remain the same from one period to the next. Cost accounting is used for O managerial decision making, not for financial statements. When making decisions, managers O must understand that all revenue and costs are relevant. When making decisions about what products to produce, managers O need to know how revenue and costs vary with changes in output levels