Mills Inc. had a receivable from a foreign customer that is due in the local currency of the customer (stickles). On December 31, 2010, this receivable for §200,000 was correctly included in Mills' balance sheet at $132,000. When the receivable was collected on February 15, 2011, the U.S. dollar equivalent was $144,000. In Mills' 2011 consolidated income statement, how much should have been reported as a foreign exchange gain?
A. $0.
B. $36,000.
C. $48,000.
D. $10,000.
E. $12,000.