This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pathology
[{'content': 'Antisera are prepared from \nSelect and explain. \nA. Guinea pig, B. Rabbit, C. Rat, D. Horse', 'role': 'user'}, {'content': "Answer: D \nExplanation: AntiseraIs a material prepared in animalsPassive immunization was achieved by the administration of antisera or antitoxins prepared from horsesAdministration of antisera give rise to serum sickness and anaphylactic shock(Refer: K. Park's Textbook of Preventive and Social Medicine, 24th edition, pg no:112)", 'role': 'assistant'}]