This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hematology, Subject name: Pharmacology
Which of the following drug is NOT a Gp IIb/IIIa antagonist? 
Select and explain. 
A. Tirofiban, B. Abciximab, C. Eptifibatide, D. Prasugrel
D: Prasugrel
Answer: D: Prasugrel 
Explanation: Ans. (D) Prasugrel(Ref: Katzung 13/e p596, KDT 8/e p677)Prasugrel is an antagonist of P2 Y12 receptors of ADP like clopidogrel.GpIIb/IIIa antagonists includeAbciximabTirofibanEptifibatide