Which DNA replication starts

Options

A. The leading strand produces Okazaki fragments
B. The hydrogen bonds between the nucleotides of two strands break
C. The phosphodiester bonds between the adjacent nucleotides break
D. The bonds between the nitrogen base and deoxyribose sugar break

Answer

B

Explanation

During DNA replication both the strands of DNA unwind by enzyme helicase that break hydrogen bond between nitrogenous bases.