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': 'What factor is responsible for deciding whether an antibody will remain membrane bound or get secreted? \nSelect and explain. \nA. RNA splicing, B. Class switching, C. Differential RNA regulation, D. Allelic exclusion', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Synthesis and diversity of immunoglobulin in membrane bound or secretory form is determined by differential/ alternative RNA processing of heavy, kappa & lambda light chains & immunoglobulin gene rearrangements.', 'role': 'assistant'}]