The OBC is a detailed document which identifies the preferred option and procurement route and supports and justifies the case for investment. The emphasis is on what has to be done to meet the strategic objectives identified in the IA. A full list of options will be reduced to a short list of those which meet agreed criteria. An analysis of the costs, benefits and risks of the short listed options will be prepared. A preferred option will be determined based on the outcome of a benefits scoring analysis, a risk analysis and a financial and economic appraisal. It's suitability for PPP procurement should be assessed in accordance with the Scottish Governments Value for Money Assessment Guidance [insert link].