; (C) enable geographical diversity in associated projects that capture carbon dioxide from anthropogenic sources or ambient air, with the goal of enabling projects in all major carbon dioxide-emitting regions of the United States; and (D) are located within, or adjacent to, existing pipeline or other linear infrastructure corridors, in a manner that minimizes environmental disturbance and other siting concerns. (3) Master credit agreements (A) Priority projects The Secretary may enter into a master credit agreement for a project that the Secretary determines— (i) will likely be eligible for credit assistance under subsection (b), on obtaining— (I) additional firm commitments from associated carbon capture projects to use the project; or (II) all necessary permits and approvals; and (ii) is a project of high priority, as determined in accordance with the criteria described in paragraph (2). (B) Adequate funding not available If the Secretary fully obligates funding to eligible projects for a fiscal year and adequate funding is not available to fund a Federal credit instrument, a project sponsor (including a unit of State or local government) of an eligible project may elect— (i) (I) to enter into a master credit agreement in lieu of the Federal credit instrument; and (II) to wait to execute a Federal credit instrument until the fiscal year for which additional funds are available to receive credit assistance