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: Gynaecology & Obstetrics
Impoant factor for discordant growth between twins is: 
Select and explain. 
A. Anaemia, B. Twin to twin transfusion, C. Compression, D. All
B: Twin to twin transfusion
Answer: B: Twin to twin transfusion 
Explanation: Twin to twin transfusion