18. The principal objective of a performance report is to: A. highlight activities that need management attention. B. direct blame to those managers who did not meet goals. C. provide a basis for rewarding effective managers. D. highlight budgets that have been incorrectly established. 19. The best reason for flexing a budget is to: A. permit a more accurate determination of variances. B. revise a budget at the beginning of a period. C. adjust actual results so they are closer to budgeted amounts. D. recognize the cost behavior pattern of budgeted amounts. 20. The total variance for any particular cost component is referred to as the: A. price variance. B. efficiency variance. C. budget variance. D. none of the above. 21. A variance is the difference between actual costs and: A. selling price. B. expected costs. C. activity-based costs. D. historical costs