Selected information concerning the operations of a company for the year ended December 31 is as follows:

<p><em><strong>Units produced20,000</strong></em></p> <p><em><strong>Units sold18,000</strong></em></p> <p><em><strong>Direct materials used $80,000</strong></em></p> <p><em><strong>Direct labor incurred $40,000</strong></em></p> <p><em><strong>Fixed factory overhead $50,000</strong></em></p> <p><em><strong>Variable factory overhead $24,000</strong></em></p> <p><em><strong>Fixed selling and administrative expenses $60,000</strong></em></p> <p><em><strong>Variable selling and administrative expenses $9,000</strong></em></p> <p><em><strong>Work-in-process inventories at the beginning and end of the year were zero. What was the company's</strong></em></p> <p><em><strong>finished goods inventory cost at December31 under the variable (direct) costing method?</strong></em></p> <p><em><strong>a. $23,900</strong></em></p> <p><em><strong>b. $19,400</strong></em></p> <p><em><strong>c. $17,000</strong></em></p> <p><em><strong>d. $14,400</strong></em></p>