A 70 year old COPD patients presents with palpitations. ECG rhythm strip shows?

ECG strip shows a hea rate of approximately 120/min with normal sinus rhythm. However a very peculiar finding is present here with variable P wave morphology. MC arrhythmia in COPD patients is M.A.T (Multifocal atrial tachycardia). It originates due to multiple ectopic foci in atria. Choice A has an exaggerated response to emotional stimuli like fear. Choice B has Retrograde P waves with narrow complex QRS. (Blue arrows) Choice C has absent P waves with irregular RR interval.