Calculate the NPV at 12% and the IRR for the following projects. Find IRR's to the nearest whole percent. a. An initial outflow of $10,000 followed by three inflows of $4,000. b. An initial outflow of $10,000 followed by inflows of $3,000, S4,000, and $5,000. c. An initial outflow of $10,000 followed by inflows of $5,000, Compare the NPVs and IRRs to see the impact of shifting $2,000 between years one and three