What Is the Process of Double Taxation for the Shareholders

What is the process of double taxation for the shareholders of a corporation in a 'classical' tax system?

A) The owners of a corporation are taxed when they receive dividend payments and when they make a profit from the sale of shares.
B) Their shares are taxed when they are both bought and sold.
C) The corporation must pay taxes on any profits it makes, and the capital raised by the sale of shares is also subject to taxation.
D) The corporation is taxed on the profits it makes, and the owners are taxed when this profit is distributed to them.