Proctor and Wamble purchased some research and development equipment for $200,000. The interest rate is 5% and salvage value is $20,000. The equipment's expected life is 10 years. Compute the depreciation schedule of each method and calculate the net present value of each approach to determine which one is better: a) Straight-line depreciation b) Sum-of-years'-digits depreciation c) MACRS depreciation Select one: O a. SOYD Depreciation b. Straight-Line Depreciation C. MACRS Depreciation d. DDB Depreciation e. None