; (2) in paragraph (4)(B), by striking the period at the end and insert a semicolon; and (3) by adding at the end the following: (5) in the case of county coverage, prioritize the use of yields from sources that provide the greatest geographic coverage of county-level data from the same source; and (6) in the case of county coverage— (A) use the yield, benchmark revenue and payment rate based on the county of the physical location of the farm; and (B) in the case of a farm that crosses county boundaries— (i) split the base acres on a pro rata basis based on the relative quantity of cropland in each county; and (ii) calculate any payments on that same pro rata basis. .