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: Anatomy
Concerning Brachial plexus, which of the following facts are true: 
Select and explain. 
A. Formed by spinal nerve C5 - T1, B. Most common site of injury is upper trunk, C. It is surrounded by fascia derived from preveebral fascia, D. All
D: All
Answer: D: All 
Explanation: A, B, C i.e. Formed by spinal nerve C5 - T1, Most common site of injury is upper trunk , Injury may occur during breech delivery, & Lower trunk injury results in hand deformity