This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Unknown
[{'content': "The defect in Glanzmann's thrombasthenia is - \nSelect and explain. \nA. Gp IIb-IIIa, B. Gp IIa-IIb, C. Gp IIa-IIIb, D. Gp IIIb-IIa", 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Gp IIb-IIIa", 'role': 'assistant'}]