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
Antimetabolite drug used for the treatment of gout? 
Select and explain. 
A. Allopurinol, B. Zidovudine, C. Azathioprine, D. None of the above
A: Allopurinol
Answer: A: Allopurinol 
Explanation: Synthetic nucleotide used in the treatment of Gout-Alloourinol.