This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Infection, Subject name: Medicine
[{'content': 'Which maturation stage of RBCs is infected by Plasmodium falciparum - \nSelect and explain. \nA. Reticulocyte stage only, B. Normoblast stage, C. Old RBC, D. RBC of all ages', 'role': 'user'}, {'content': 'Answer: D \nExplanation: The causative agent of the deadliest form of malaria, the parasite Plasmodium falciparum, is a protozoan that is transmitted by mosquitoes to humans in the form of stringlike sporozoites that attack the liver, multiply in liver cells, and then invade red blood cells( all stages of rbcs present in blood) in the form of micron-sized, droplet-shaped Ref Harrison20th edition pg 1045', 'role': 'assistant'}]