This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
Which of the following is the most serious organ involvement in amyloidosis 
Select and explain. 
A. Cardiac tissue, B. Renal tissue, C. Splenic tissue, D. Hepatic tissue
B: Renal tissue
Answer: B: Renal tissue 
Explanation: Ref Robbins 8/e p254;9/e p261 Amyloidosis of the kidney is the most common and potentially the most serious form of organ involvement