Which statement best describes ATP in the context of nucleic acids?

• A. ATP is a nitrogenous base that lacks sugar and phosphate groups.
• B. ATP is a ribonucleotide (adenosine triphosphate) that serves as an energy currency and as a monomer used to build RNA, but it is not itself a nucleic acid polymer.
• C. ATP is a deoxyribonucleotide incorporated directly into DNA during replication.
• D. ATP is a nucleic acid because it is a polymer of nucleotides linked by phosphodiester bonds.

Answer: (B)