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': 'Heterozygous sickle cell anaemia gives protection against: \nSelect and explain. \nA. G6PD, B. Malaria, C. Thalassennia, D. Dengue fever', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]