North Dakota Corporation purchased a machine for $20,000 in January 2017. North Dakota records a full year depreciation on assets in the year of purchase, and their year ends December 31st.. For financial reporting purposes, North Dakota depreciates the machine on a straight-line basis over a four-year period. There is no residual value. For tax purposes, depreciation expense on the machinery is 50% of cost in 2017, 30% in 2018, and 20% in 2019. Pretax accounting income for 2017 was $150,000, which includes interest revenue of $20,000 from municipal bonds. The enacted tax rate is 30% for all years. There are no other differences between accounting and taxable income. Current income taxes payable at December 31, 2017 are:

A) $42,000

B) $37,500

C) $43,500

D) $45,000