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
which of the following is true regarding ERBS PALSY ? 
Select and explain. 
A. Can be a bih injury, B. C5 C6 root involved, C. Deformity is adduction and internal rotation, D. Ulnar nerve is affected
A: Can be a bih injury
Answer: A: Can be a bih injury 
Explanation: Can be. A bih injury C5C6 root involved Deformity is abduction and internal rotation of arm Complete paralysis of biceps and Brachioradialis muscle Refer : maheswari 9th ed