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
A prokinetic drug which lacks D2 receptor antagonistic action is which one of the following? 
Select and explain. 
A. Metoclopramide, B. Domperidone, C. Cisapride, D. Chlorpromazine
C: Cisapride
Answer: C: Cisapride 
Explanation: Ans. is 'c' i.e., Cisapride o Cisapride has 5-HT4 agonistic activity (without any D2 blocking activity).