land subject to a qualified conservation easement

(i) which is located—

(I) in or within 25 miles of an area which, on the date of the decedent's death, is a metropolitan area (as defined by the Office of Management and Budget),

(II) in or within 25 miles of an area which, on the date of the decedent's death, is a national park or wilderness area designated as part of the National Wilderness Preservation System (unless it is determined by the Secretary that land in or within 25 miles of such a park or wilderness area is not under significant development pressure), or

(III) in or within 10 miles of an area which, on the date of the decedent's death, is an Urban National Forest (as designated by the Forest Service),

(ii) which was owned by the decedent or a member of the decedent's family at all times during the 3-year period ending on the date of the decedent's death, and

(iii) with respect to which a qualified conservation easement has been made by an individual described in subparagraph (C), as of the date of the election described in paragraph (6).

(i) which is located in the United States or any possession of the United States,

(ii) which was owned by the decedent or a member of the decedent's family at all times during the 3-year period ending on the date of the decedent's death, and

(iii) with respect to which a qualified conservation easement has been made by an individual described in subparagraph (C), as of the date of the election described in paragraph (6).