This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Pharmacology
All the following causes QT prolongation except 
Select and explain. 
A. Cisapride, B. Quinidine, C. Terfenadine, D. Cetrizine
D: Cetrizine
Answer: D: Cetrizine 
Explanation: Drugs producing QT prolongation- class 1a, class 3 antiarrhythmic agents terfinadine, tricyclic antidepressants, neuroleptics, prokinetics Ref: KD tripathi 8th ed