Uprecation 11-32 Loretta Livermore Labs purchased R&D e costing $200,000. The interest rate is 5%,salient years the PW of the depreciation deductios value is $20,000, and expected life is 10 assuming: (a) Straight-line depreciation (b) Sum-of-years'-digits depreciation (c) MACRS depreciation (d) Double declining balance depreciation (e) Which method is preferred for determining the firm's taxes