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
In Glanzmann thrombasthenia, the defect is 
Select and explain. 
A. Decreased platelets, B. Defective adhesion, C. Defective aggregation, D. Defective secretion of granules
C: Defective aggregation
Answer: C: Defective aggregation 
Explanation: It is due to defective aggregation because of surface deficiency of GP II b- IIIa.