Given the following cash flows for projects A and B and assuming a cost of capital of $10\%$:

Year Project A Project B

$0-100,000-150,000$

$125,00050,000$

$230,00060,000$

$335,00070,000$

$480,00050,000$

a$.$ Use the net present value method to select the better of the two projects?

b$.$ Use the payback period method to select the better of the two projects?

c$.$ Calculate the MIRR for the above two projects?