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
Vitamin involved in 1 carbon metabolism: 
Select and explain. 
A. Folic acid, B. Thiamine, C. Pyridoxine, D. All
A: Folic acid
Answer: A: Folic acid 
Explanation: Ans:A.)Folic Acid.ONE CARBON GENERATION AND UTILIZATION