30. J Corporation issued 400,000 ordinary shares when it began operations in 2019 and issued an additional 200,000 shares in the same year. J Corporation also issued preferred shares convertible into 200,000 ordinary shares. In 2019, J Corporation purchased 150,000 ordinary shares and held it in treasury. At December 31, 2019, how many shares of J Corporation's ordinary share capital were outstanding? A. 800,000 B. 650,000 C. 600,000 D. 450,000