MBTS Finance Co$.$ has the following investment alternatives. Each one lasts a year.

Investment A B C

Cash Inflow $$1,150$ $$560$ $$600$

Cash Outflow $$1,000$ $$500$ $$500$

a$.$ What is the net present value of Investment A$?$ Investment B$?$ Investment C$?$

b$.$ What is the internal rate or return on Investment A$?$ Investment B$?$ Investment C$?$

c$.$ Which investment$($s$)$ should MTBS Finance Co$.$ make? Why?