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: Medicine
[{'content': 'Haptane is : \nSelect and explain. \nA. Same as epitope, B. Small molecular weight protein, C. Requires carrier for specific antibody production, D. Simple haptens are precipitate', 'role': 'user'}, {'content': "Answer: C \nExplanation: Answer is C (Requires carrier for specific antibody production): Hepatitis become immunogenic only when attached to a large molecule or 'carrier' -", 'role': 'assistant'}]