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
true about fracture shaft femur in infant is: 
Select and explain. 
A. Child abuse is commonest cause, B. Heals rapidly, C. Traction is all that usually required, D. Fat embolism is common
D: Fat embolism is common
Answer: D: Fat embolism is common 
Explanation: D i.e. Fat embolism is common