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
[{'content': 'Which of the following types of anemia is associated with a Raised MCV and Normal MCHC - \nSelect and explain. \nA. Sideroblastic anemia, B. Vitamin B12 and Folic acid deficiency, C. Beta thalassemia, D. Iron deficiency anemia', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]