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
The compound that consists of ribose linked by an N-glycosidic bond to N-9 of adenine is 
Select and explain. 
A. A purine nucleotide, B. A pyrimidine nucleotide, C. Adenosine, D. AMP
C: Adenosine
Answer: C: Adenosine 
Explanation: None