This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
[{'content': 'True statement regarding Atrioventricular block with atrial tachycardia is - \nSelect and explain. \nA. Seen in WPW syndrome, B. Is a complication of pacemaker, C. Can occur in normal person occasionally., D. Seen in Digitalis toxicity with K+ depletion', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]