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: Pathology
Megaloblastic anemia is due to - 
Select and explain. 
A. Defect in DNA synthesis, B. Defect in RNA synthesis, C. Defect in protein synthesis, D. None of the above
A: Defect in DNA synthesis
Answer: A: Defect in DNA synthesis 
Explanation: None