This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Upper limb, Subject name: Anatomy
Erb's point is formed by 
Select and explain. 
A. C4 and C5, B. C5 and C6, C. C6 and C7, D. C6 and T1
B: C5 and C6
Answer: B: C5 and C6 
Explanation: Erb's point is formed by the C5 and C6 root, anterior and posterior divisions of upper trunk, subscapular nerve and nerve to subclavius. Injury to upper trunk causes Erb's paralysis. B D Chaurasia 7th edition Page no: 59