Natlonal Bank has several departments that occupy both floors of a two-story bullding. The departmental accounting system has a single account, Bullding Occupancy Cost, In Its ledger. The types and amounts of occupancy costs recorded In this account for the current period follow. Depreclation-Bulding Interest-Building mortgage Taxes-Bulding and land Gas (heating) expense Lighting expense Malntenance expense $ 18,000 27000 8,000 2,500 3,000 5,500 Total occupancy cost $64,000 The bullding has 4,000 square feet on each floor. In prior perlods, the accounting manager merely divided the $64,000 occupancy cost by 8,000 square feet to find an average cost of $8 per square foot and then charged each department a building occupancy cost equal to this rate times the number of square feet that It occupled Diane LInder manages a first-floor department that occuples 1,000 square feet, and Juan Chlro manages a second-floor department that occuples 1,800 square feet of floor space. In discussing the departmental reports, the second-floor manager questions whether using the same rate per square foot for all departments makes sense because the first-floor space is more valuable. This manager also references a recent real estate study of average local rental costs for simllar space that shows first-floor space worth $30 per square foot and second-floor space worth $20 per square foot (excluding costs for heating, lighting, and malntenance)