This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Misc. (W.B.C), Subject name: Pathology
[{'content': 'Bence jones proteinuria is derived from? \nSelect and explain. \nA. Alpha globulins, B. Light chain globulins, C. Gamma globulins, D. Delta globulins', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. (b) Light chain globulins(Ref: R 9th/pg 598-602)Excretion of light chains in the urine has been referred to as Bence Jones proteinuria.Light chains includes k and l (kappa and lambda)', 'role': 'assistant'}]