; and (C) the determination of the actual crop revenue and agriculture risk coverage guarantee pursuant to section 8. (19) Transitional yield The term transitional yield has the meaning given the term in section 502(b) of the Federal Crop Insurance Act ( 7 U.S.C. 1502(b) ). (20) United States The term United States , when used in a geographical sense, means all of the States. 3. Base acres (a) Adjustment of base acres (1) In general The Secretary shall provide for an adjustment, as appropriate, in the base acres for covered commodities for a farm whenever any of the following circumstances occur: (A) A conservation reserve contract entered into under section 1231 of the Food Security Act of 1985 ( 16 U.S.C. 3831 ) with respect to the farm expires or is voluntarily terminated. (B) Cropland is released from coverage under a conservation reserve contract by the Secretary. (C) The producer has eligible oilseed acreage as the result of the Secretary designating additional oilseeds, which shall be determined in the same manner as eligible oilseed acreage under section 1101(a)(1)(D) of the Food, Conservation, and Energy Act of 2008 ( 7 U.S.C. 8711(a)(1)(D) ). (2) Special conservation reserve acreage payment rules For the crop year in which a base-acres adjustment under subparagraph (A) or (B) of paragraph (1) is first made, the owner of the farm shall elect to receive price loss coverage or agriculture risk coverage with respect to the acreage added to the farm under this subsection or a prorated payment under the conservation reserve contract, but not both. (3) Beginning farmers of covered commodities (A) Definition of beginning farmer of covered commodities In this paragraph, the term beginning farmer of covered commodities means a beginning farmer (as determined by the Secretary) of one or more covered commodities that has not planted or been prevented from planting a covered commodity on any farm for any crop year before the 2002 crop year. (B) Opportunity to increase base acres The Secretary shall provide a 1-time