This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Parasitology, Subject name: Microbiology
[{'content': 'Black water fever is a special manifestation of malaria caused by; \nSelect and explain. \nA. P. falciparum, B. P. malariae, C. P. ovale, D. P. vivax', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. A. P. falciparumBlackwater fever (BWF) is a severe clinical syndrome, characterized by intravascular hemolysis, hemoglobinuria (with passage of black urine), and acute renal failure caused by a variety of factors in patients with P. falciparum infestation.', 'role': 'assistant'}]