In 2020, Green Corporation incurred the following expenditures in the development of a new plant process: Salaries $250,000 Materials 90,000 Utilities 20,000 Quality control testing costs 40,000 Management study costs 5,000 Depreciation of equipment 18,000 During 2021, benefits from the project began being realized in May. If Green Corporation elects a 60 month deferral and amortization period, determine the amount of the deduction for the current year. a.$50,400 b.$57,067 c.$48,000 d.$54,667