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 vessel is not present in subclavian triangle? 
Select and explain. 
A. Suprascapular artery, B. Occipital artery, C. III part of subcavian artery, D. External jugular vein
B: Occipital artery
Answer: B: Occipital artery 
Explanation: Subclavian triangle contains 

Third part of subclavian artery and subclavian vein 
Suprascapular artery and vein 
Commencement of transverse cervical artery and termination of the corresponding vein 
Lower part of external jugular vein