This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Gastrointestinal tract, Subject name: Pharmacology
Metoclopramide 
Select and explain. 
A. Inhibit cholinergic smooth muscle stimulation in the gastrointestinal tract, B. Decrease lower esophageal sphincter pressure, C. Stimulate D2 receptor, D. No significant action on colonic motility
D: No significant action on colonic motility
Answer: D: No significant action on colonic motility 
Explanation: metoclopramide incerase peristalsis ,no significant action on colonic motility ESSENTIALS OF MEDICAL PHARMACOLOGY SEVENTH EDITION KD TRIPARHI PG NO.664