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
Type II hypersensitivity- 
Select and explain. 
A. Blood transfusion reaction, B. Ahus reaction, C. Hay Fever, D. Glomerulonephritis
A: Blood transfusion reaction
Answer: A: Blood transfusion reaction 
Explanation: Ans. is 'a' i.e., Blood transfusion reaction