such exclusion, disclose to the public the reasoning for such exclusion. (3) Nationally recognized statistical rating organization In this subsection, the term nationally recognized statistical rating organization has the meaning given that term under section 3 of the Securities Exchange Act of 1934 ( 15 U.S.C. 78c ). . (b) GAO study (1) Study The Comptroller General of the United States shall carry out a study on— (A) the quality of credit ratings across nationally recognized statistical ratings organizations (as defined under section 3 of the Securities Exchange Act of 1934), including during the 2008 economic crisis