A company is considering the purchase of a copier that costs $5000. Assume a cost of capital of 10 percent and the following cash flow schedule: Year 1: $3000 Year 2: $2000 Year 3: $2000 Determine the project’s NPV and IRR. NPV IRR()①A. $883 15% ②B. $243 20% ③C. $883 20%

A. ①

B. ②

C. ③

在发电机和断路器（开关）间或发电机定子三相出口处（引出线），装设接地线。