This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
Franklin disease is? 
Select and explain. 
A. heavy chain disease, B. 6-heavy chain disease, C. y-heavy chain disease, D. u-heavy chain disease
C: y-heavy chain disease
Answer: C: y-heavy chain disease 
Explanation: Answer- C. y-heavy chain diseaseFranklin's disease (gamma heavy chain disease)It is a very rare B-cell lymphoplasma cell proliferative disorder.It may be associated with autoimmune diseases and infection is a common characteristic of the disease.