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, $4,000, and $5,000. c. An initial outflow of $10,000 followed by inflows of $5,000, $4,000, and $3,000. d. Notice that in parts a, b, and c, a total of $12,000 is received over three years. Compare the NPVs and IRRs to see the impact of shifting $2,000 between years one and three