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
Renal lesions in Multiple myeloma - 
Select and explain. 
A. Cast nephropathy, B. Amyloid deposition, C. Plasma cell infiltration, D. All
D: All
Answer: D: All 
Explanation: Ans. is 'a' i.e., Cast nephropathy; 'b' i.e., Amyloid deposition; 'c' i.e., Plasma cell infiltration