The Comptroller General of the United States, or any of his duly authorized representatives, shall have access, for the purpose of audit and examination, to any books, documents, papers, and other records of the Committee and of each agency designated by the Committee under section 47(c) of this title. This section shall also apply to any qualified nonprofit agency for the blind and any such agency for other severely handicapped which have sold commodities or services under sections 46 to 48c of this title but only with respect to the books, documents, papers, and other records of such agency which relate to its activities in a fiscal year in which a sale was made under sections 46 to 48c of this title