Under Which of the Following Conditions Would a Shareholder Be

Under which of the following conditions would a shareholder be liable to the corporation or its creditors?

A) If he or she buys stock that was fully paid for when issued.
B) If he or she deals only with dividends and not shares.
C) If he or she is involved in "watered stock" situations.
D) If he or she was unaware of the illegality of the dividends.