Rick Corporation purchased a vein of coal ore for $5,250,000. It is estimated that 30,000,000 tons of ore are available to be extracted. The residual value is determined to be $250,000. The estimated depletion expense for this year's extraction of 2,750,000 tons of ore (rounded to the nearest dollar) is: Select one: OA $525,000 OB $418,250. . $458,333 OD $504,167 OE $481,250