Last Year, Green Corporation Incurred the Following Expenditures in the Development

Last year, Green Corporation incurred the following expenditures in the development of a new plant process:
$\begin{array}{lr}\text { Salaries } & \$ 250,000 \\\text { Materials } & 90,000 \\\text { Utilities } & 20,000 \\\text { Quality control testing costs } & 40,000 \\\text { Management study costs } & 5,000 \\\text { Depreciation of equipment } & 15,000\end{array}$
During the current year, 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) $48,000.
B) $50,400.
C) $54,667.
D) $57,067.
E) None of the above.