Which of the following are characteristics of ribonucleic acid (RNA)? (Select all that apply.)

Options:
A. It contains a sugar called deoxyribose.
B. It leaves the nucleus and can be found in the cytoplasm.
C. It contains nitrogenous bases A, U, C, G.
D. It plays an important role in the production of proteins.
E. It is always double-stranded.