This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General Pharmacology, Subject name: Pharmacology
Sequence of clinical trials is 
Select and explain. 
A. NDA -FDA-NDA, B. FDA--NDA-FDA, C. FDA-Marketing-NDA, D. FDA-NDA-Post marketing surveillance
D: FDA-NDA-Post marketing surveillance
Answer: D: FDA-NDA-Post marketing surveillance 
Explanation: (FDA-NDA-Post marketing survillance)