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: Medicine
Bence jones proteins are - 
Select and explain. 
A. Heavy chain IgG, B. Present in bone marrow, C. Seen in lymphoma, D. Light chain IgG
D: Light chain IgG
Answer: D: Light chain IgG 
Explanation: About two-third cases of multiple myeloma excrete Bence Jones peotein i.e, light chain Ig G in the urine. Bence Jones proteins are paraproteins or abnormal immunoglobulins or their pas circulating in plasma & excreted in urine.Reference :Harsh mohan textbook of pathology sixth edition pg no 383.