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: Medicine
Megaloblastic anemia should be treated be treated with both folic acid vitamin B12 because - 
Select and explain. 
A. Folic acid alone causes, improvement of hematologic symptoms but worsening of neurological symptoms, B. It is a Co factor, C. It is enzyme, D. None of the above
A: Folic acid alone causes, improvement of hematologic symptoms but worsening of neurological symptoms
Answer: A: Folic acid alone causes, improvement of hematologic symptoms but worsening of neurological symptoms 
Explanation: None