A company plans to implement a bonus plan based on segment performance. In addition, the company plans to convert to a responsibility accounting system for segment reporting. The following costs, which have been included in the segment performance reports that have been prepared under the current system, are being reviewed to determine if they should be included in the responsibility accounting segment reports:
I. Corporate administrative costs allocated on the basis of net segment sales.
II. Personnel costs assigned on the basis of the number of employees in each segment.
III. Fixed computer facility costs divided equally among each segment.
IV. Variable computer operational costs charged to each segment based on actual hours used times a predetermined standard rate; any variable cost efficiency or inefficiency remains in the computer department.
Of these four cost items, the only item that could logically be included in the segment performance reports prepared on a responsibility accounting basis would be the