Pretax accounting income for the year ended December 31, 2019, was $50 million for Mushrooms Company. Mushrooms' taxable income was $60 million. This was a result of differences between straight-line depreciation for financial reporting purposes and MACRS for tax purposes. The enacted tax rate is 30% for 2019 and 40% thereafter. What amount should Mushrooms report as the current portion of income tax expense for 2019? Question 6 options: A) $15 million B) $18 million C) $20 million D) $24 million