The city of Ridgeland operates a power plant on a river that flows through town. The village uses some of this generated electricity to operate a water treatment plant and sells the excess electricity to a local utility. The city council is evaluating two alternative proposals.

A - Proposal A calls for replacing the generators used in the plan with more efficient generators that will produce more electricity and have lower operating costs. The salvage value of the old generators is higher than their removal cost.

B - Proposal B calls for raising the level of the dam to retain more water for generating power and increasing the forece of water flowing through the dam. This will significantly increase the amount of electricity generated by the plan. Operating costs will not be affected.

Required:

Presented are a number of cost and revenue items. Indicate in the appropriate columns whether each item is relevant or irrelevant to proposals A and B.

	Proposal A	Proposal B
1. Cost of new furniture for City Manager's Office
2. Cost of old generators
3. Cost of new generators
4. Operating cost of old generators
5. Operating cost of new generators
6. Police Chief's salary
7. Depreciation on old generators
8. Salvage value of old generators
9. Removal cost of old generators
10. Cost of raising dam
11. Maintenance costs of water plants
12. Revenues from sale of electricty