Drillfast is a drilling corporation with operations at oil rigs around the world. For the 2014 annual report, which business segment should be reported as an operating segment?

A. South American segment, which contributes 8% of total revenues, 5% of profits and accounts for 9% of assets. South American operating manager reports to the chief operating officer.
B. African segment, which contributes 9% of the company’s assets, 16% of total revenues, and 18% of profits. The African operating manager reports to the British operating manager.
C. Australian segment, which contributes 10% of total revenues, 2% of assets, and 4% of profits. The Australian manager reports to the chief operating officer.
D. Texas based corporate headquarters