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
Comment on the diagnosis of the patient based on ECG 
Select and explain. 
A. Multifocal atrial tachycardia, B. Atrial fibrillation, C. Mobitz II hea block, D. Wolf Parkinson white syndrome
A: Multifocal atrial tachycardia
Answer: A: Multifocal atrial tachycardia 
Explanation: HR of patient is variable. Notice the change in RR interval in lead II. The HR changes from 200 bpm to 150 bpm. Notice the changes in amplitude of P waves which leads to diagnosis as Multifocal atrial tachycardia(MAT). Choice 2 is ruled out as A. fibrillation has an absent P waves Choice 3 is ruled out as Mobitz II hea block has bradycardia Choice 4 is ruled out as Wolf Parkinson white syndrome has Delta waves with broad qRS complex is not seen