This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Plasma Cell Disorders and Multiple myeloma, Subject name: Pathology
[{'content': 'Bence Jones proteins are derived from? \nSelect and explain. \nA. Alpha globulins, B. Light chain globulins, C. Beta globulins, D. Delta globulins', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Excretion of light chains in the urine has been referred to as Bence Jones proteinuria. Light chains includes K and l (kappa and lambda) These play a role in the pathogenesis of renal dysfunction in multiple myeloma.', 'role': 'assistant'}]