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: Biochemistry
[{'content': 'Components of 60 S subunit of ribosome are: \nSelect and explain. \nA. 5.8 S, B. 23 S, C. 16 S, D. 18 S', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A, i.e. 5.8 S', 'role': 'assistant'}]