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: Anatomy
[{'content': 'Glycoprotein IIb-IIIa complex is deficient in \nSelect and explain. \nA. Bernard soulier syndrome, B. Glanzmann disease, C. Von willibrand disease, D. Gray platelet syndrome', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Inherited deficiency of GpIIb-IIIa results in a bleeding disorder called Glanzmann thrombasthenia.(ref Robbins 9th/118)', 'role': 'assistant'}]