On Which One of the Following Dates Do Dividends Become

On which one of the following dates do dividends become a liability of the issuer for accounting purposes?

A) First day of the fiscal year in which the dividend is expected to be paid
B) Twelve months prior to the expected dividend payment date
C) On the date the board declares the dividend
D) On the date the company announces the dividend to the public
E) On the date of payment