; or (II) the national average loan rate for a marketing assistance loan for the covered commodity in effect for that crop year under subtitle B of title I of the Agricultural Act of 2014 ( 7 U.S.C. 9031 et seq.). (B) The sum of the amounts determined under subparagraph (A) for all covered commodities on those farms. (C) The quotient obtained by dividing the amount determined under subparagraph (B) by the total planted acres of all covered commodities on those farms. (3) County yield disparities (A) In general The Secretary may adjust county yields under paragraph (1)(A) to reduce disparities between neighboring and nearby counties with similar soils and climate that are not attributable to a localized weather event. (B) Aggregate estimated payment The Secretary shall ensure that all adjustments made under this paragraph are balanced so the aggregate amount of payments made under this section as a result of the adjustments for a crop year do not increase. (C) Options (i) In general If the Secretary makes adjustments under this paragraph, the Secretary shall make the adjustments in accordance with clause (ii) or (iii). (ii) Variations within a State (I) In general Subject to subparagraph (B), the Secretary shall allow State committees of the Farm Service Agency to review and recommend adjustments to the initial yield estimates before the adjustments become final to reduce unexplained variation between neighboring or nearby counties with similar soils and climate. (II) Review and approval The Secretary shall review and approve or reject adjustments recommended under subclause (I) before the adjustments become final. (iii) Variations along State boundaries (I) In general Subject to subparagraph (B), the Secretary shall allow State committees of the Farm Service Agency or the national office of the Farm Service Agency, in consultation with affected State committees, to review and recommend adjustments to the initial yield estimates before the adjustments become final to reduce unexplained variation between counties