The stockholders' equity section of Twilight Time's balance sheet on January 1, 2015, appeared as follows:

Common stock, $2 par, 2,000 shares issued and outstanding	$4,000
Additional paid-in capital - Common	1,600
Retained earnings	5,400
Total stockholders' equity	$11,000

On March 1, 2015, Twilight reacquired 800 shares of common stock at $10 per share. Twilight sold 400 of the treasury shares on November 15 for $12 per share. The transaction for the November 15 sale would include:

a. an increase in Gain on Sale of Treasury Stock, $800.

b. a decrease in Treasury Stock, $4,000.

c. a decrease in Cash, $4,800.

d. an increase in Common Stock, $4,800.