Whitlow Incorporated and Tanaka Manufacturing both have unrealized gains from purchased securities. Whitlow reported their unrealized gains on the income statement as part of net income, but Tanaka did not. Why?
A : Whitlow classified their securities as available-for-sale securities, whereas Tanaka classified their securities as long-term securities.
B : Whitlow classified their securities as available-for-sale securities, whereas Tanaka classified their securities as trading securities.
C : Whitlow classified their securities as long-term securities, whereas Tanaka classified their securities as trading securities.
D : Whitlow classified their securities as trading securities, whereas Tanaka classified their securities as available-for-sale securities.