This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Medicine
[{'content': ',70yr old male with history of HTN and DM developed the following rhythm with Bp 90/ 40 mm Hg and feeble pulse what is the next step of management \nSelect and explain. \nA. IV adenosine, B. IV Diltiazem, C. DC cardioversion, D. Ibuteilide', 'role': 'user'}, {'content': 'Answer: C \nExplanation: ECG : SVT REF : HARISSONS 21ST ED', 'role': 'assistant'}]