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': 'Component of 50s subunit is/are: \nSelect and explain. \nA. 23s, B. 28s, C. 25s, D. 5.8s', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e. 23s', 'role': 'assistant'}]