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
An isograft indicates transfer of tissues between: 
Select and explain. 
A. Related donors, B. Monozygotic twins, C. Parts of same individual, D. Unrelated donors
B: Monozygotic twins
Answer: B: Monozygotic twins 
Explanation: None