This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: ECG and Arrhythmias 1, Subject name: Medicine
In a normal ECG which lead does it represent? 
Select and explain. 
A. aVL, B. aVR, C. V1, D. V6
B: aVR
Answer: B: aVR 
Explanation: The aVR is often neglected lead. It is an unipolar lead facing the right superior surface. As all the depolarization are going away from lead aVR, all waves are negative in aVR (P, QRS, T) in normal sinus rhythm.