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
Transfusion reaction and erythroblastosis fetalis are? 
Select and explain. 
A. Type I hypersensitivity, B. Type II hypersensitivity, C. Type III hypersensitivity, D. Type IV hypersensitivity
B: Type II hypersensitivity
Answer: B: Type II hypersensitivity 
Explanation: Ans. is `b' i.e., Type H hypersensitivity