This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
[{'content': 'On complete hydrolysis of DNA, we will get all of the following except \nSelect and explain. \nA. Adenosine, B. Purine base, C. Phosphoric acid, D. Dexose pentose sugar', 'role': 'user'}, {'content': 'Answer: A \nExplanation: DNA is a polymer of nuleotides (deoxyribonucleotides). Thus, its monomeric unit is nucleotide :-', 'role': 'assistant'}]