An ECG on admission shows a broad complex tachycardia at a rate of 150 bpm. His blood pressure is 124/82 mmHg and there is no evidence of heart failure.. Verapamil

A 60-year-old man is admi tted with palpitations to the Emergency Department. An ECG on admission shows a broad complex tachycardia at a rate of 150 bpm. His blood pressure is 124/82 mmHg and there is no evidence of heart failure. Which one of the following is it least appropriate to give?
A. Procainamide
B. Lidocaine
C. Synchronised DC shock
D. Adenosine
E. Verapamil***