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
Acute graft rejection occurs within 
Select and explain. 
A. 3 hours, B. 3 days, C. 3 months, D. 3 years
C: 3 months
Answer: C: 3 months 
Explanation: Answer- C. 3 monthsAcute rejection - It occurs 5 days to 3 months after transplantation.Both cell-mediated (cellular) rejection and humoral (antibody mediated) rejection are involved.