This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pathology, Subject name: Pathology
Acute cellular rejection following solid organ transplantation occurs- 
Select and explain. 
A. Within minutes to hours of transplantation, B. Within 48 hours of transplantation, C. Between 5 and 30 days of transplantation, D. Beyound 30 days after transplantation
C: Between 5 and 30 days of transplantation
Answer: C: Between 5 and 30 days of transplantation 
Explanation: *acute graft versus host disease occurs within days to weeks after allogenic bone marrow transplantation.Reference;Robbins and Cotran pathologic basis of disease South Asia edition.