Choose the best phrase to make the sentence true for a firm with a normal job-order absorption costing system (such as those described in Essay 5.1 of What Counts), under the assumption that the firm sells everything in the period it is produced. Assume no changes in projected or actual data except those implied by the stated change itself.Increasing the projected activity base will ______________ reported per-unit product costs.Group of answer choicesincreasehave no effect ondecreasehave an unpredictable effect on