; and (D) support the Secretary in the development of the comprehensive development plan for the Trail under subsection (c) and annual reports under subsection (f). (c) Comprehensive Development Plan (1) In general Not later than 2 years after the date of establishment of the Team under subsection (b), the Secretary shall submit to the Committee on Energy and Natural Resources of the Senate and the Committee on Natural Resources of the House of Representatives a comprehensive development plan for the Trail. (2) Recommended inclusions The plan submitted under paragraph (1) should— (A) identify any gaps in the Trail with respect to which the Secretaries have not been able to acquire land or interests in land by purchase from a willing seller, donation, exchange, cooperative agreement, or easement agreement; (B) include a plan for closing the gaps identified under paragraph (1) by acquiring land or interests in land or entering into an easement agreement; and (C) include general and site-specific development plans, including anticipated costs. (d) Method of acquisition In carrying out this section, the Secretaries— (1) may acquire land or an interest in land only by— (A) purchase from a willing seller with donated or appropriated funds; (B) donation; (C) exchange; (D) cooperative agreement; or (E) easement agreement