morris corporation uses the cost method to account for treasury stock transactions. as of june 30, the corporation had the following account balances. treasury stock (100 shares at a cost of $20 per share) $2,000 paid-in capital from previous treasury stock transactions 400 on july 15, morris sold the 100 shares of treasury stock for $18 per share. as a result of this transaction, what amount would morris charge to retained earnings, if any, under the cost method of accounting for treasury stock transactions?