There is an investment opportunity which will cost $$57,000$ today but will generate a

cashflow of $$8,000$ per year forever starting in $1$ year. If the appropriate discount rate is $8\mathrm{.}00\%,$

calculate:

a$)$ The NPV of the investment

b$)$ the IRR of the investment

c$)$ profitability index of the investment

d$)$ the payback period of the investment