This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Organ Transplant / Graft, Subject name: Pathology
[{'content': 'Which of the following is the most appropriate term for a graft when donor and recipient are identical twins? \nSelect and explain. \nA. Xenograft, B. Allograft, C. Isograft, D. Autograft', 'role': 'user'}, {'content': 'Answer: C \nExplanation: GRAFTS: Autograft- Self ; Skin/Hair grafting. Allograft- Different person from same species. Isograft- Identical twin. Xenograft- Different species; valvular replacement.', 'role': 'assistant'}]