Gibbs Corporation Owned 20,000 Shares of Oliver Corporation's $5 Par

Gibbs Corporation owned 20,000 shares of Oliver Corporation's $5 par value common stock. These shares were purchased in 2011 for $180,000. On September 15, 2015, Gibbs declared a property dividend of one share of Oliver for every ten shares of Gibbs held by a stockholder. On that date, when the market price of Oliver was $28 per share, there were 180,000 shares of Gibbs outstanding. What NET reduction in retained earnings would result from this property dividend?

A) $162,000
B) $504,000
C) $171,000
D) $342,000