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 is a quantitative defect in globin synthesis \nSelect and explain. \nA. Thalassemia, B. Sickle cell hemoglobinopathy, C. G6PD deficiency, D. Diamond-Black fan syndrome', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Thalassemia", 'role': 'assistant'}]