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
[{'content': 'Which of the following statements is true about hapten - \nSelect and explain. \nA. It induces brisk immune response, B. It needs carrier to induce immune response, C. It is a T-independent Antigen, D. It has no association with MHC', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Haptens are small molecules that elicit an immune response only when attached to a large carrier such as a protein Ref: Ananthanarayan & Panikers textbook of microbiology 9th edition pg:87', 'role': 'assistant'}]