This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Haematology, Subject name: Medicine
[{'content': 'Haemoglobin F is raised in - \nSelect and explain. \nA. Juvenile chronic myeloid leukemia, B. Hereditary spherocytosis, C. Congenital red cell aplasia, D. Myasthenia gravis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: <p>In juvenile CML, peripheral smear shows leukocytosis.Thrombocytosis & anemia are common.Leukocyte alkaline phosphate score is normal or low & fetal hemoglobin levels are elevated.</p><p>Reference :OP Ghai essential pediatrics 8th edition pg no608.</p>', 'role': 'assistant'}]