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
[{'content': 'Which of the following acts at site A? \nSelect and explain. \nA. Aspirin, B. Vorapaxar, C. Abciximab, D. Ticagrelor', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. B. VorapaxarVorapaxar does not affect ADP-mediated platelet aggregation, coagulation parameters, or bleeding time.A. Protease-activated receptor-1 (PAR-1) antagonists-VorapaxarB. Adenosine diphosphate (ADP) receptor inhibitors - Ticlopidine, Clopidogrel, Prasugrel, TicagrelorC. Glycoprotein IIB/IIIA inhibitors -Abciximab, Eptifibatide, TirofibanD. Irreversible cyclooxygenase inhibitors- AspirinE. OthersPhosphodiesterase (PDE3) inhibitor -CilostazolAdenosine reuptake inhibitor - Dipyridamole', 'role': 'assistant'}]