This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Enzymes, Subject name: Biochemistry
Coenzyme in decarboxylation reaction: 
Select and explain. 
A. Niacin, B. Biotin, C. Pyridoxine, D. Riboflavin
C: Pyridoxine
Answer: C: Pyridoxine 
Explanation: Ans. C. PyridoxineCoenzyme for carboxylation reaction--BiotinCoenzyme for decarboxylation--PyridoxineCoenzyme for decarboxylation reactions of Alpha Ketoglutate dehydrogenase and Branched chain Ketoacid dehydrogenase-- Thiamine.