This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S, Subject name: Medicine
Restrictive cardiomyopathy is seen in ? 
Select and explain. 
A. Amylodosis, B. Fatty change of hea, C. Viral myocarditis, D. Doxorubicin toxicity
A: Amylodosis
Answer: A: Amylodosis 
Explanation: Micrograph of cardiac amyloidosis, a cause of restrictive cardiomyopathy. Restrictive cardiomyopathy (RCM) is a form of cardiomyopathy in which the walls of the hea are rigid (but not thickened). Thus the hea is restricted from stretching and filling with blood properly . Ref Harrison 20th edition pg 1576