Problem 1: On March 31,2016, the Zephyr Mining Company purchased the rights to a coal mine. The purchase price plus additional costs necessary to prepare the mine for extraction of the coal totaled S2,000,000. The company expects to extract 1,000,000 tons of coal during a three-year period. During 2016, 400,000 tons were extracted and sold immediately. A. Calculate depletion for 2016. B. Briefly discuss the accounting treatment for the 2016 depletion