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: Physiology
[{'content': 'Bowl of spaghetti appearance is seen in \nSelect and explain. \nA. Ebola virions, B. Adenovirus, C. Marburg Viruses, D. Polio virus', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Some of the filamentous (negatively stained) virions were fused together, end-to-end, giving the appearance of a "bowl of spaghetti."', 'role': 'assistant'}]