<prompt> TRUE statements concerning malaria includea Malaria caused by each of the four plasmodial species can relapse after initial illnessb Red cells negative for the Duffy blood group antigen are resistant to Plasmodium vivaxc Renal impairment is a grave prognostic sign in falciparum malariad Plasmodium malariae can cause immune-mediated nephropathyacbdcd  <response>: P. vivax needs Duffy Antigen to enter the red cells, patients who lack this antigen are resistant to P.vivax infection.Renal failure can occur dt P. malaria infection. It is dt deposition of soluble immune complexes in the glomeruli.The manifestation of falciparum malaria isComaAcidosisSevere normocytic normochromic anaemiaRenal failureNon-cardiogenic pulmonary edemaHypoglycemiaHypotensionshockDICConvulsionHemoglobinuriaJaundiceOut of these major features, only 2 features carry grave prognosis :ComaHypoglycemiaRenal failure in falciparum malaria seems to occur on the basis of tubular sequestration of parasitized erythrocytes and tends to resolve spontaneously.Malaria caused by only 2 species of Plasmodium can relapsePlasmodium vivax Plasmodium Ovale 