Rover Corporation's corporate charter specifies that it may sell up to 9 million shares of stock. The corporation initially sold 6 million shares to investors. A few years later, the corporation purchased back 2 million shares of treasury stock, and then reissued half of these treasury shares to the market. How many outstanding shares does Rover Corporation have after these transactions? Multiple Choice O 4 million. 5 million. 7 million 8 million