Wide pulse pressure is seen in: (A) Beri beri, (B) Cardiac tamponade, (C) Diarrhea, (D) Aortic  stenosis
Answer is A. Wide pulse pressure is when SBP increases by more than 50%. It is seen in:

Aortic regurgitation 
PDA
Anemia
Beri beri
Hyperthyroidism 
Fever
Complete  heart block
AV shunts