If an investment has an NPV=0, then

A this means the investor earned no money

B this means the investor earned more than the

required rate of return (i.e., cost of capital)

C this means the investor earned less than the required

rate of return (i.e., cost of capital)

D this means the investor a return just equal to the

required rate of return (i.e. the cost of capital rate at

which the NPV was calculated)