Which of the Following Is the Best Definition of a Dividend

Which of the following is the best definition of a dividend?

A) The market's reaction to a change in corporate dividend payout.
B) Idea that individual investors can undo corporate dividend policy by reinvesting dividends or selling shares of stock.
C) Date two business days before the date of record, establishing those individuals entitled to a dividend.
D) Payment made out of a firm's earnings to its owners, either in the form of cash or stock.
E) Payment made by a firm to its owners from sources other than current or accumulated earnings.