2.19 Comparison of each short-list option, and their advantages over Business As Usual, allows identification of the best option for the delivery of social value. The total value of discounted benefits less costs provides the Net Present Social Value (NPSV) of an intervention. The NPSV and Benefit Cost Ratio (benefits divided by relevant costs) alongside risks and any other relevant considerations, such as unmonetisable costs and benefits, help determine the preferred option.