This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Haematology, Subject name: Pathology
[{'content': 'Bence Jones proteins are derived from- \nSelect and explain. \nA. Alpha globulins, B. Beta globulins, C. Gamma globulins, D. Delta globulins', 'role': 'user'}, {'content': 'Answer: C \nExplanation: About 2/3rd cases of myeloma excrete Bence Jones (light chain) proteins in the urine consists of either kappa or lamda light chains along with presence of Bence Jones paraproteins in the serum.Most commonly gamma globulin Ref;Robbins and Cotran Pathologic basis of disease.South Asia Edition volume 1.page no.363', 'role': 'assistant'}]