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: Microbiology
[{'content': "Senescent RBC's are mainly attacked in- \nSelect and explain. \nA. Vivax malaria, B. Ovale malaria, C. Falciparum malaria, D. Quartan malaria", 'role': 'user'}, {'content': 'Answer: D \nExplanation: P. malariae which attacks mainly senescent (old) RBC’s: Agent of Quartan malaria\nP. ovale and P. vivax: attack younger RBCs and reticulocytes: Agent of benign tertian malaria\nP. falciparum: attacks RBC of all ages: Agent of malignant tertian malaria.', 'role': 'assistant'}]