This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nutrition, Subject name: Medicine
A patient present with pedal oedema with Water- hammer pulse. What is the diagnosis? 
Select and explain. 
A. B1 deficiency, B. B3 deficiency, C. B6 deficiency, D. B12 deficiency
A: B1 deficiency
Answer: A: B1 deficiency 
Explanation: Ans. A. B1 deficiencyWater hammer pulse is seen in high output cardiac failure caused by wet beri-beri. The development of CHF can explain the pedal/periorbital edema of the patient.