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: Surgery
Which of the following structures is fixed first during reimplantation of an amputated digit: 
Select and explain. 
A. Bone, B. Aery, C. Vein, D. Nerve
A: Bone
Answer: A: Bone 
Explanation: Bone is the first structure to be fixed during reimplantation of an amputated digit. Ref: Trauma, by Charles M. Cou Brown, Margaret M, Page 483.