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
Erb's point is at the junction of - 
Select and explain. 
A. C5, 6, B. C6, 7, C. C7, 8, D. C8, T1
A: C5, 6
Answer: A: C5, 6 
Explanation: Erb’s point is in upper trunk (C5,C6). Injury here causes Erb’s paralysis.
Klumpke’s paralysis is due to injury at C8,T1.