What is the purpose of the Horizonte de Planeamiento (HP) in investment analysis?

To determine the period of time during which the investment will operate.
To calculate the net present value of the investment.
To determine the internal rate of return of the investment.
To compare the costs and benefits of different investment projects.
a) I and IV are correct.
b) II and III are correct.
c) I and II are correct.
d) All of the above are incorrect.