An adjusted trial balance at December 31, Year 6, includes the following account balances: Common stock, $3 par $600,000 Additional paid-in capital 800,000 Treasury stock, at cost 50,000 Net unrealized holding loss on available-for-sale securities 20,000 Retained earnings: appropriated for uninsured earthquake losses 150,000 Retained earnings: unappropriated 200,000 What amount should be reported as total equity in the December 31, Year 6, balance sheet? A. $1,680,000 B. $1,780,000 C. $1,820,000 D. $1.720,000