This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Electrocardiography, Subject name: Medicine
A patient after myocardial infarction becomes pulse- less and BP crashes. Diagnosis is? 
Select and explain. 
A. Monomorphic ventricular tachycardia, B. Bidirectional tachycardia, C. Polymorphic ventricular tachycardia, D. Ventricular fibrillation
A: Monomorphic ventricular tachycardia
Answer: A: Monomorphic ventricular tachycardia 
Explanation: Ans. (a) Monomorphic ventricular tachycardia.