This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anemia, Subject name: Medicine
Which of the following types of anemia is associated with a raised MCV and normal MCHC? 
Select and explain. 
A. Sideroblastic anemia, B. Vitamin B12 and Folic acid deficiency, C. Beta thalassemia, D. Iron deficiency anemia
B: Vitamin B12 and Folic acid deficiency
Answer: B: Vitamin B12 and Folic acid deficiency 
Explanation: Megaloblastic anemia (Folate or Vitamin B12 deficiency) is associated with a raised MCV and normal MCHC. Low MCV Normal MCV Increased MCV Sideroblastic anemi Iron deficiency anemia Thalassemic disorders Anemia of inflammation/anemia of chronic disease Acute blood loss Bone marrow suppression Bone marrow invasion Aplastic anemia Chronic renal insufficiency Endocrine dysfunction Hypothyroidism Hypopituitarism Ethanol abuse Folate deficiency Vitamin B12 deficiency Myelodysplastic syndromes Acute myeloid leukemias