<prompt> Polyvalent antivenin is not prepared by using the venom of which of the following following snakes?Naja najaHypernale hypernaleEchis carinateBungarus caeruleus  <response>: Polyvalent antivenin is prepared mainly for four snakes. By hyper immunising with horse with venom. The snakes are Naja naja, Echis carinate, Daboia russel and Bungarus caeruleus. 