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
Haptane is : 
Select and explain. 
A. Same as epitope, B. Small molecular weight protein, C. Requires carrier for specific antibody production, D. Simple haptens are precipitate
C: Requires carrier for specific antibody production
Answer: C: Requires carrier for specific antibody production 
Explanation: Answer is C (Requires carrier for specific antibody production): Hepatitis become immunogenic only when attached to a large molecule or 'carrier' -