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
Megaloblasticanemia occur due to deficiency of 
Select and explain. 
A. Iron deficiency, B. Folate deficiency, C. Protein deficiency, D. Vitamin C deficiency
B: Folate deficiency
Answer: B: Folate deficiency 
Explanation: None