Need help on parts A, B and C. Thanks

A company purchased furniture on January 1. Its cost was $15 600, and it had a residual value of $2,000. Its useful life is determined to be 5 years. Using double -declining balance depreciation, the depreciation for year 1 to the nearest dollar will be. O A. $6,240. O B. $3,120 O C. $5,440 O D. $2,720 B. Cheshire Corporation purchases a machine for $125,000. It has an estimated salvage value of $10,000 and is expected to produce 100,000 units in its lifetime. During the first year of operation, it produced 15,500 units. To the nearest dollar, the depreciation for the first year under the units of production method will be (Round intermediary calculations to the nearest cent, and the final answer to the nearest dollar.) O A. $19,375. OB. $31,250. O C. $28,750 O D. $17,825 C. Oregon Ore purchased a vein of coal ore for $5 260,000 It is estimated that 32,000,000 tons of ore are available to be extracted. The estimated depletion expense for this year's extraction of 2,770,000 tons of ore is: (Round any intermediary calculations to the nearest cent and your final answer to the nearest dollar.) O A. $409,339 OB, $443,200 O C. $498,600 O D. $5,260,000