What is the internal rate of return on the following projects, each of which requires a $20,000 cash outlay now and returns the cash flows indicated?
a. $10,426.72 at the end of Years 1 and 2.
b. $3,196.40 at the end of Years 1 through 10.
c. $3,429.28 at the end of Years 1 through 13.
d. $3,939.00 at the end of Years 1 through 15.
e. $8,397.84 at the end of Years 3 through 7.
f. $3,618.80 at the end of Years 2 through 10.
g. $37,508.98 at the end of Year 5 only.