Which of the Following Best Describes the Economic Strategy of the Song

Which of the following best describes the economic strategy of the Song dynasty?

A) Like previous Chinese dynasties, the Song obtained tax revenue largely from peasant-owned lands.
B) The Song promoted a system of barter rather than a money-based economy.
C) The Song were great promoters of trade and commerce, in contrast to Confucian ideals.
D) The Song sought to make China less dependent on foreign trade by raising tariffs.