This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immunomodulators, Subject name: Pharmacology
[{'content': 'The &;xi&; in any monoclonal antibody represents \nSelect and explain. \nA. Name, B. Chimeric, C. Tumour targeted for, D. None of the above', 'role': 'user'}, {'content': 'Answer: B \nExplanation: A chimeric antibody (cAb) is an antibody made by fusing the antigen binding region (variable domains of the heavy and light chains, VH and VL) from one species like a mouse, with the constant domain (effector region) from another species. REF KD Tripathi 8th ed', 'role': 'assistant'}]