What are the reporting requirements for documerting the management and preservation of infrastructure assets when the "modified approach" is used? A) Management must attest in the MD&A to the fact that is has an asset management system and that its assets are being preserved at an established condition level. B) There is no reporting requirement regarding the "modified approach," but the independent auditor must take appropriate audit steps regarding that issue when attesting to the financial statements. C) A statement must be included in the notes to the financial statements to the effect that the infrastructure assets are being preserved. D) Documentation must be presented in required supplementary information documenting that the infrastructure assets are being preserved