The Eastern District of Adelson Inc. is organized as a cost center. The budget for the Eastern District of Adelson Inc. for the month ended December 31, 2014, is as follows:
Sales salaries .................. $ 819,840
System administration salaries ........... 448,152
Customer service salaries ............. 152,600
Billing salaries .................. 98,760
Maintenance .................... 271,104
Depreciation of plant and equipment ........ 92,232
Insurance and property taxes .......... 41,280
Total ................................ $ 1,923,968
During December, the costs incurred in the Eastern District were as follows:
Sales salaries ................... $ 818,880
System administration salaries ......... 447,720
Customer service salaries ........... 183,120
Billing salaries ................ 98,100
Maintenance ................ 273,000
Depreciation of plant and equipment ......... 92,232
Insurance and property taxes ........... 41,400
Total .................... $ 1,954,452

Instructions
1. Prepare a budget performance report for the manager of the Eastern District of Adelson for the month of December.
2. For which costs might the supervisor be expected to request supplemental reports?