The IRS considered Altemeds' business consisted solely of trafficking in a controlled substance and disallowed their business deductions as prescribed by Sec. 280E. The lesson was that Altermeds did a poor job of developing and presenting their calculation of cost of goods sold. What did the IRS conclude regarding the cost of goods sold by Altermeds? O A. They used the accrual method of accounting O B. They performed a physical inventory to verify beginning inventory O C. They did not account for beginning and ending inventories O D . They properly accounted for ending inventory