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: Radiology
[{'content': '70yr old male with his HTN and DM developed the following rhythm with Bp 90 40 mm Hg and feeble pulse what is the next step of management *diagram \nSelect and explain. \nA. IV adenosine, B. IV Diltiagens, C. DC cardioversion, D. Ibuteilide', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ecg shows unstable SVT -CDC cardio version should be done', 'role': 'assistant'}]