Consider two projects: A$)$ with casha$$ows in years $0-4$ of $-300$$$,120$$$,120$$$,120$$ and respectively $120$$$,$ B$)$ with casha$$ows in years $0-3$ of $-300$$$,150$$$,150$$ and respectively $150$$ $($a$)$ Assume an opportunity cost of capital of $10\%.$ Which of these projects would you accept, if you use the NPV method?

$($b$)$ Which one would you prefer, among the two, based on their ProO$$tability Index $($PI$)?$

$($c$)$ Which one would you choose if the cost of capital is $16\%?($d$)$What is the payback period of each project?

Is the project with the shortest payback period also the one with the highest NPV$?$ Explain. $($e$)$What are the internal rates of return on the two projects? Does the IRR rule in this case give the same advice i$.$e$.$ preferred project as NPV$?$