Which of the following are definite indicators of an accept decision for an independent project with conventional cash flows?

I. positive net present value

II. profitability index greater than zero

III. internal rate of return greater than the required rate

IV. positive internal rate of return

A:I, II, III, and IV

B:II and IV only

C:II, III, and IV only

D:I, II, and III only

E:I and III only