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
All of the following electrocardiographic findings may represent manifestations of digitalis intoxication, EXCEPT - 
Select and explain. 
A. Bigeminy, B. Junctional tachycardia, C. Atrial flutter, D. Atrial tachycardia with variable block
C: Atrial flutter
Answer: C: Atrial flutter 
Explanation: None