This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
Capsid of viral structure is: 
Select and explain. 
A. Extracellular infectious paicle, B. Protein coat around nucleic acid, C. Envelop around a virus, D. None of the above
B: Protein coat around nucleic acid
Answer: B: Protein coat around nucleic acid 
Explanation: Ans. b. Protein coat around nucleic acid