10 pleas explain

Broadway Ltd. purchased equipment on January 1, 2014, for $84,0000, estimating a 7-year useful life and no residual value. In 2014 and 2015, Broadway depreciated the asset using the straight-line method. In 2016, Broadway changed to sum-of-years'-digits depreciation for this equipment. What depreciation would Broadway record for the year 2016 on this equipment? (Do not round your depreciation rate.) $120,000. $200,000. $100,000. $240,000