3) is better for comparing projects of different size (scale) of initial investment because a) Net present value, it tells us whether a project has higher return than expected return or not b) Profitability Index, it tells us the net present value of the project for every dollar invested c) Equivalent Annual Annuity, it tells us the average annual net present value of a project d) Payback rule, it tells us the time it takes to recoup the initial investment