<prompt> Hyperacute rejection is due toPreformed antibodiesCytotoxic T lymphocyte mediated injuryEndothelitis caused by donor antibodiesCirculating macrophage mediated injury  <response>: Hyperacute rejection occurs when preformed anti-donor antibodies are present in the circulation of the recipient. Such antibodies may be present in a recipient who has previously rejected kidney transplant, Multiparous women, Prior blood transfusionsHyperacute Rejection occurs within minutes or hours after transplantation.Robbins pathology 9e Pg: 233 