Which of the Following Is MOST Responsible for Determining the Structural

Multiple Choice

Which of the following is MOST responsible for determining the structural stability of double-stranded DNA?

A) The attractive interaction between positively charged purines and negatively charged pyrimidines.
B) H-bonding between the OH of deoxyribose and purine and pyrimidine ring nitrogens.
C) Hydrophobic interaction between contiguous base pairs and hydrogen bonding between complementary bases on opposite strands.
D) Interaction between the phosphate groups in separate chains.
E) Hydrophilic interaction between the pentoses in separate chains.