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: Pathology
[{'content': 'Highest LAP score is seen in - \nSelect and explain. \nA. CML, B. Polycythemia vera, C. PNH, D. Pregnancy', 'role': 'user'}, {'content': 'Answer: B \nExplanation: High levels of LAP score are found in:\n\nInfection\nInflammatory disorder\nGrowth factor therapy\nPregnancy\nOCP\nStress\nMyeloproliferative disorders (except CML)\nDrugs (e.g. Lithium, Corticosteroid, Estrogen)\n\nAbnormally high values of LAP is seen in myeloproliferative disorder e.g. polycythemia vera and myelofibrosis\nDecreased LAP score is seen in CML (chronic phase) and PNH (paroxysmal nocturnal hemoglobinuria).', 'role': 'assistant'}]