Rye Co. purchased a machine with a four-year estimated useful life and an estimated 10% salvage value for $80,000 on January 1,2015 . In its income statement, what would Rye report as the depreciation expense for 2016 using the double-declining-balance method? Select one: a. $9,000 b. $10,000 c. $20,000 d. $40,000