This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Pathology
The amyloid protein in primary systemic amylodosis belongs to which of the following classes of fibril proteins? 
Select and explain. 
A. AA protein, B. AL protein, C. A beta protein precursor, D. Beta 2 microglobular protien
B: AL protein
Answer: B: AL protein 
Explanation: primary amylooidosis ,immune dyscrasias with amyloidosis usually syatemic and is of AL type GENERAL AND SYSTEMIC PATHOLOGY RAMDAS NAYAK PG NO.172