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
Fascia around nerve bundle of brachial plexus is derived from : 
Select and explain. 
A. Pectoral fascia, B. Clavipectoral fascia, C. Prevertebral fascia, D. Deep cervical fascia
C: Prevertebral fascia
Answer: C: Prevertebral fascia 
Explanation: Axillary sheath is derived from pre - vertebral fascia.