Assuming 25,000 dollars are invested today, next year 2,500 dollars are returned and in the second year the full 25,000 returned. What is the IRR of this series of cash flows? Assuming that 2,500 is invested in a government T-bill with a one-year maturity and a rate of 0.77%, what is the MIRR of this cash flow?

a) IRR: 4.23%/MIRR: 5.63%

b) IRR: 4.92%/MIRR: 5.12%

c) IRR: 5.63%/MIRR: 4.23%

d) IRR: 5.12%/MIRR: 4.92%