This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
Sparfloxacin and astemizole can cause : 
Select and explain. 
A. Ventricular arrhythmia, B. Myopathy, C. Electrolyte imbalance, D. Nephropathy
A: Ventricular arrhythmia
Answer: A: Ventricular arrhythmia 
Explanation: None