This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
In case of occlusion occurs at the 2nd pa of Axillary aery, blood flow is maintained by collateral/ anastomosis between 
Select and explain. 
A. Anterior and posterior circumflex humor and aery, B. Supra scapular and posterior circumflex aery, C. Deep branch of the transverse cervical aery and sub scapular aery, D. Anterior circumflex aery and sub scapular aery
C: Deep branch of the transverse cervical aery and sub scapular aery
Answer: C: Deep branch of the transverse cervical aery and sub scapular aery 
Explanation: Ligation, thrombosis or trauma of axillary aery anywhere between origins of thyrocervical trunk &subscapular aeries will not lead to compromise of distal arm flow.