relating to the demonstration program or an episode of care for such a pregnant woman or newborn. (VII) Such other information as the Secretary may require relating to the demonstration program, including with respect to determining the soundness of the proposed prospective payment system. (C) Length of demonstration programs A State selected to conduct a demonstration program under this paragraph shall conduct the program for a 4-year period. (D) Requirements for selecting demonstration programs In selecting States to conduct demonstration programs under this paragraph, the Secretary shall— (i) ensure States meet the criteria described in paragraph (2)(A)(i)(II)