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
Occlusion occurs at the 2nd part of axillary artery, blood flow is maintained by anastamosis between : 
Select and explain. 
A. Anterior and posterior circumflex humeral artery, B. Circumflex scapular and posterior circumflex humeral artery, C. Deep branch of the transverse cervical artery and subscapular artery, D. Anterior circumflex artery and subscapular artery
C: Deep branch of the transverse cervical artery and subscapular artery
Answer: C: Deep branch of the transverse cervical artery and subscapular artery 
Explanation: Anastomosis around scapula maintains the blood supply when there is an obstruction at 2nd part of axillary artery.
Anastomosis around body of scapula :
This is formed by

Suprascapular branch of subclavian artery.
Deep branch of transverse cervical artery which is a branch of thyrocervical trunk from subclavian artery and
Circumflex scapular branch of subscapular artery from 3rd part of axillary artery.

Anastomosis on the acromion process :
This is formed by

Acromial branch of thoracoacromial artery from 2nd part of axillary artery.
Ascending branch of posterior circumflex humeral artery from 3rd part of axillary artery and
Acromial branch of Suprascapular artery from subclavian artery.