; and (ii) any acreage on the farm that the producers were prevented from planting during the 2014 through 2017 crop years to that covered commodity because of drought, flood, or other natural disaster, or other condition beyond the control of the producers, as determined by the Secretary; bears to (B) the 4-year average of— (i) the acreage planted on the farm to all covered commodities for harvest, grazing, haying, silage, or other similar purposes for the 2014 through 2017 crop years; and (ii) any acreage on the farm that the producers were prevented from planting during the 2014 through 2017 crop years to covered commodities because of drought, flood, or other natural disaster, or other condition beyond the control of the producers, as determined by the Secretary. (4) Inclusion of all 4 years in average For the purpose of determining a 4-year acreage average under paragraph (3) for a farm, the Secretary shall not exclude any crop year in which a covered commodity was not planted. (5) Treatment of multiple planting or prevented planting For the purpose of determining under paragraph (3) the acreage on a farm that producers planted or were prevented from planting during the 2014 through 2017 crop years to covered commodities, if the acreage that was planted or prevented from being planted was devoted to another covered commodity in the same crop year (other than a covered commodity produced under an established practice of double cropping), the owner— (A) may elect the commodity to be used for that crop year in determining the 4-year average