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
Not a nucleic acid test? 
Select and explain. 
A. Western blot, B. Southern blot, C. Nohern blot, D. Microarray
A: Western blot
Answer: A: Western blot 
Explanation: Ans. is 'a' i.e., Western blot