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': 'With respect to ticlopidine, clopidogrel: \nSelect and explain. \nA. Is more likely to cause formation of antiplatelet antibodies, B. Is less likely to cause neutropenia, C. Is more likely to cause severe bleeding, D. Has a greater antiplatelet effect', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ticlopidine and clopidogrel are ADP antagonists and are used as antiplatelet drugs. Antiplatelet action, chances of bleeding and formation of antibodies is similar with these two agents. Clopidogrel is better tolerated because it is less likely to cause severe neutropenia and thrombocytopenia as compared to ticlopidine. Leukopenia seen in the first three months of treatment of ticlopidine around 1 % of the patients.', 'role': 'assistant'}]