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
[{'content': 'What is the effect of beri beri on circulation ? \nSelect and explain. \nA. Hyperdynamic circulation, B. Hypovolemic shock, C. Bradycardia, D. Pulsus paradoxus', 'role': 'user'}, {'content': 'Answer: A \nExplanation: high output congestive hea failure occurs in beri beri ( Harrison 17 pg 442)', 'role': 'assistant'}]