This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hypeension, Arrhythmias, Dyslipidemia, Subject name: Pharmacology
[{'content': 'Which of the following drugs when combined with erythromycin may cause ventricular arrhythmias? \nSelect and explain. \nA. Tetracycline, B. Streptomycin, C. Ebastine, D. Cisapride', 'role': 'user'}, {'content': 'Answer: D \nExplanation: As Erythromycin is enzyme inhibitor of CYP3A4 --> concentration of drugs like cisapride, Terfenadine and Astemizole increases--> blocking the K+ channel --> QT prolongation --> ventricular arrhythmias.', 'role': 'assistant'}]