On January 1, 2016, Archer Corp. acquired a 10% interest in Wilson Enterprises. On January 1, 2017, Archer acquired an additional 20% Wilson's common stock. No goodwill resulted from either purchase. Wilson reported net incomes of $900,000 and $840,000 for 2016 and 2017, respectively. Dividends paid by Wilson amounted to $300,000 in 2016 and $400,000 in 2017. [NOTE: Assume transition is the prospective approach for fiscal years (and interim periods) beginning after December 15, 2016.] What is the amount of the required prior period adjustment to make Archer's Equity Investment balance at January 1, 2017 to appropriately transition to the equity method?

Select one:

A. $60,000

B. $30,000

C. $-0-

D. $90,000