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
Black water fever is a special manifestation of malaria caused by; 
Select and explain. 
A. P. falciparum, B. P. malariae, C. P. ovale, D. P. vivax
A: P. falciparum
Answer: A: P. falciparum 
Explanation: 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.