To ask the Scottish Executive by what percentage the Scottish Prison Service estimates that costs per prisoner year on a net present value basis would vary with reference to a 700 place prison if a Public/Private Partnership Private Build Private Operate prison were built with places for (a) 300, (b) 400, (c) 500, (d) 600, (e) 800, (f) 900 and (g) 1,000 prisoners as referred to in paragraph 1.3 of the Financial Review of Scottish Prisons Service Estates Review by PricewaterhouseCoopers.