This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Virology, Subject name: Microbiology
[{'content': 'Incubation period of ebola virus is - \nSelect and explain. \nA. 5-20 hours, B. 20-40 hours, C. 5-20 days, D. 20-40 days', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., 5-20 days * Ebola virus is a RNA virus, belongs to Filoviridae.* The virus causes Ebola hemorrhagic fever, a fatal disease.* Incubation period is 2-21 days.* Ebola virus begins to effect infected individuals with flue-like symptoms. There is a quickly oncoming fever, achy muscle, and headache, which are soon followed by bloody vomit and diarrhea. Some days later, victims can begin to bleed through the eyes, nose, or mouth. A hemorrhagic rash can develop on the entire body, which also bleeds. Muscle pain and swelling of the pharynx also most victims.* Patients are diagnosed by testing of urine or saliva with an ELISA test, however the results are not always accurate.* Due to the extensive amount of bleeding, most patients will die of hypovolemic shock and/or systematic organ failure within 2 to 21 days of contracting after about 14 days and rare able to survive the virus.", 'role': 'assistant'}]