Correct Answer - B
Nucleic acids are polymer of nucleotides in which nucleic acids are linked together by phosphodiester linkage.
`-overset("Base")overset(|)("Sugar")-"phosphate"-(overset("Base")overset(|)("sugar")-"phosphate")_(n)-overset("Base")overset(|)("sugar")-` e.g., DNA, RNA etc.