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: Physiology
[{'content': 'The RBC in beta-thalassemia are typically: \nSelect and explain. \nA. Microcytic and hypochromic., B. Microcytic and normochromic., C. Normocytic and normochromic., D. Macrocytic and hypochromic.', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]