This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Blood, Subject name: Medicine
[{'content': 'Neutropenia is seen in all except: \nSelect and explain. \nA. Scurvy, B. Aplastic anemia, C. Typhoid fever, D. Chloramphenicol', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans: A (Scurvy) Ref: Harrison's Principles of Internal Medicine, 18 ed.Explanation:Severity of neutropenia based on the absolute neutrophil count (ANC) measured in cells per microliter of blood:Mild neutropenia (1000 < ANC < 1500) minimal risk of infectionModerate neutropenia (500 < ANC < 1000) -- moderate risk of infectionSevere neutropenia (ANC < 500) -- severe risk of infection.Causes of NeutropeniaCauses can be divided into the following groups:Decreased production in the bone marrow due to:Aplastic anemiaArsenic poisoningCancer, particularly blood cancersHereditary disorders (e.g. Congenital neutropenia. cyclic neutropenia)RadiationVitamin B 12, Folate or copper deficiency.Increased destruction:Autoimmune neutropenia.Chemotherapy treatments, such as for cancer and autoimmune diseasesMarginalisation and sequestration:HemodialysisMedications:ChloramphenicolPhenytoinIndomethacinPropylthiouracilCarbimazoleChlorpromazineTrimethoprim/sulfamethoxazoleClozapineTiclodipineInfectionsTuberculosisTyphoid feverBrucellosisTularemiaMeaslesInfectious mononucleosisMalariaViral hepatitisAIDS", 'role': 'assistant'}]