Blanco company purchased 200 of the 1,000 outstanding shares of darby company's common stock for $600,000 on january 2, 2018. during 2016, darby company declared dividends of $100,000 and reported earnings for the year of $400,000.

if blanco company used the fair value method of accounting for its 20% investment in darby company, and its fair value at 12/31/18 is $680,000, the investment (darby) account on december 31, 2018 should be

a. $580,000.
b. $660,000.
c. $600,000.
d. $680,000.