; (B) a certification that— (i) an alternative option for carrying out the plutonium disposition program for the same amount of plutonium as the amount of plutonium intended to be disposed of in the MOX facility exists, meeting the requirements of the Business Operating Procedure of the National Nuclear Security Administration entitled Analysis of Alternatives and dated March 14, 2016 (BOP–03.07); and (ii) the remaining lifecycle cost, determined in a manner consistent with the cost estimating and assessment best practices of the Government Accountability Office, as found in the document of the Government Accountability Office entitled GAO Cost Estimating and Assessment Guide (GAO–09–3SP), for the alternative option would be less than half of the estimated remaining lifecycle cost of the mixed-oxide fuel program