This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Haematology, Subject name: Pathology
[{'content': 'A newborn baby presented with profuse bleeding from the umbilical stump after bih. Rest of the examination and PT, APTT are within normal limits. Most of probable diagnosis is - \nSelect and explain. \nA. Factor X deficiency, B. Glanzmann thrombasthenia, C. Von willebrand disease, D. Bernad soulier disease', 'role': 'user'}, {'content': "Answer: B \nExplanation: TEXT BOOK OF PATHOLOGY HARSHMOHAN 6TH EDITION PG NO 334 DEFECTIVE PLATELET AGGREGATION . In thrombasthenia (Glanzmann's disease), there is failure of primary platelet aggregation with ADP or collagen due to inherited deficiency of two of platelet membrane glycoproteins.", 'role': 'assistant'}]