Assume the Following Shares Outstanding: (1) Preferred Shares, $3, Cumulative

Assume the following shares outstanding: (1) Preferred shares, $3, cumulative, 1,000 shares with dividends in arrears 3 years, for 20X1, 20X2, and 20X3. (2) Common shares, 2, 000 shares. Total dividends declared in 20X4 were $30,000. What is the total amount of dividends to which common shareholders are entitled?

A) $18,000
B) $21,000
C) $27,000
D) $30,000