This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pharmacology
WHICH OF THE FOLLOWING IS NOT A PROKINETIC DRUG? 
Select and explain. 
A. 5HT4 ANTAGONIST, B. D2 BLOCKERS, C. MACROLIDES, D. DIPHENOXYMETHANE
D: DIPHENOXYMETHANE
Answer: D: DIPHENOXYMETHANE 
Explanation: REF : KD TRIPATHI 8TH ED