This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immunology, Subject name: Microbiology
Hapten 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: Haptens are small molecules that elicit an immune response only when attached to a large carrier such as a protein Reff: Ananthanarayan & Panikers textbook of microbiology 9th edition pg:87