Kussmaul's sign is positive in 
a. Restrictive cardiomyopathy 
b. Constrictive pericarditis 
c. Cardiac tamponade 
d. Dilated cardiomyopathy 
e. Pneumothorax: (A) a,b,e, (B) a,b, (C) a,c,d,e, (D) a,b,c,d,e
Answer is B. Kussmaul's sign is rise in JVP with inspiration.  It is seen in constrictive pericarditis  and Restrictive cardiomyopathy.