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 causes of Anemia is associated with a Hypoplastic marrow - \nSelect and explain. \nA. Fanconi's Anemia, B. Paroxysmal Nocturanl Hemoglobinuria (PNH), C. Hypersplenism, D. Myelofibrosis", 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]