This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hematology and CVS, Subject name: Pharmacology
Which of the following statements regarding ticlopidine is TRUE? 
Select and explain. 
A. It blocks GpIIb/IIIa receptors on platelet membrane, B. It prevents ADP mediated platelet adenylyl cyclase inhibition, C. It inhibits thromboxane A2 synthesis in platelets, D. It does not prolong bleeding time
B: It prevents ADP mediated platelet adenylyl cyclase inhibition
Answer: B: It prevents ADP mediated platelet adenylyl cyclase inhibition 
Explanation: Abciximab, eptifibatide and tirofiban inhibits GpIIb/IIIa receptors. Ticlopidine and clopidogrel inhibits ADP receptors. Aspirin inhibits TXA2 synthesis in platelets. Bleeding time is prolonged by antiplatelet drugs whereas PT is prolonged by oral anticoagulants and aPTT by heparin.