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
Which of the following prokinetic drug acts on motilin receptors ? 
Select and explain. 
A. Erythromycin, B. Metoclopramide, C. Loxiglumide, D. Cisapride
A: Erythromycin
Answer: A: Erythromycin 
Explanation: None