Which of the following statements is TRUE?
A. Histones are rich in the amino acids D and E, and interact with DNA via ionic bonds.
B. RNA is transcribed as a double stranded biopolymer.
C. Adenosine functions as a neuromodulator and is inhibited by caffeine.
D. Propeller twist increases the area of contact between DNA bases and water.
E. DNA double helical structure is stabilized by glycosidic bonds that hold the paire bases together.