133. Super-Mineral began operations last year (year 1) on a mineral tract and expected a yield of 2,000,000 tons of a valuable ore used in the semiconductor industry. The total balance in the Depletion Base account (or "Natural Resources" account) was $2,000,000 before any depletion was recognized. During year 1,400,000 tons of the ore were removed. Then, early in year 2, a new vein of ore was discovered holding an estimated additional 1,600,000 tons of ore. 800,000 tons were removed in year 2. What is depletion in year 2 ? A. $1,600,000 B. $800,000 C. $600,000 D. $400,000