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': 'Apo B48 and apo 13,00 are expressed as two different apoproteins because of difference in : \nSelect and explain. \nA. RNA editing, B. RNA splicing, C. Chromosomal loci, D. Apo-B gene', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e. RNA editing', 'role': 'assistant'}]