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
Erythromycin is given in decreased bowel motility because - 
Select and explain. 
A. It increases bacterial count, B. It decreases bacterial count, C. It binds to adenyl cyclase, D. It binds to motilin receptors
D: It binds to motilin receptors
Answer: D: It binds to motilin receptors 
Explanation: Ans is 'd' i.e., It binds to motilin receptors