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: Pathology
Test for (3- thalassemia trait - 
Select and explain. 
A. HbA2, B. HbF, C. Fragility test, D. Coomb's test
A: HbA2
Answer: A: HbA2 
Explanation: Ans. is 'a' i.e., HbA2Hemoglobin electrophoresis is classically associated with elevated HbA2