; and (3) review— (A) the range of activities conducted within sister city partnerships, including activities relating to cultural exchange and economic development; (B) how such activities differ between sister city partnerships; and (C) best practices to ensure transparency regarding sister city partnerships’ agreements, activities, and employees. (c) Report (1) In general Not later than 6 months after initiating the study required under subsection (a), the Comptroller General shall submit a report to the appropriate congressional committees that contains the results of such study, including the findings, conclusions, and recommendations (if any) of the study. (2) Form The report required under paragraph (1) may include a classified annex, if necessary.