Mustang Corporation had 100,000 shares of $2 par value common stock outstanding. On December 31, 2018, the company's board of directors declares a 20 percent stock dividend. This stock dividend will be distributed on January 20, 2019 to the stockholders of record on January 15, 2019. The market price of the company's stock is $10 per share on December 31, 2018.

Required:
Write down the necessary journal entry to record the declaration of the stock dividend.