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 are ECG findings in Wolf Parkinson's white syndrome, except - 
Select and explain. 
A. Narrow QRS complexes, B. Normal QT interval, C. Slurred and tall QRS, D. Short PR interval
A: Narrow QRS complexes
Answer: A: Narrow QRS complexes 
Explanation: None