[单选题]
2. What is the role gf4bb2tm7f f)mhwqo16bs*oajr0 g43kj v/xqgv+f hs.35:x e of helicase in DNA replication?
A. It provides energy for the process.
B. It forms complimentary base pairs.
C. It breaks the hydrogen bonds between the bases.
D. It breaks the hydrogen bonds between sugar and phosphate.