Using Straight-Line Depreciation (SLD), a machine costs $600,000 today has a planned life of 15 years, with a salvage value of $150,000 at the end of its life. If we use both Declining-balance depreciation (DBD) and Straight-line depreciation (SLD) methods, what depreciation rate for the DBD method will result in the same book value for both methods at the end of year 5?

d = 3.91%

d = 4.05%

d = 5.59%

d = 3.35%

d = 4.98%

** please give me the correct answer with explanation and conclusion ( mandatory).