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
Co-enzyme used in transamination 
Select and explain. 
A. NAD, B. Biotin, C. Pyridoxal phosphate, D. Riboflavin
C: Pyridoxal phosphate
Answer: C: Pyridoxal phosphate 
Explanation: Pyridoxal phosphate (active form of vitamin B6) is the coenzyme for transamination reactions.