Which of the following descriptions about American Romanticism are correct?
选项：

A:American Romanticism was both imitative and independent.;
B:American Romanticism was imitative because some of the romantic writings were modeled on English and European works.;
C:American Romanticism was in a sense independent because the American landscape, its pioneering to the West, Indian civilization, and the new nation's democracy and dreams constituted an incomparably superior source of inspiration for native American authors.;
D:American Puritanism as a cultural heritage also shaped the taste of American Romanticism.