This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Upper limb : Miscellaneous, Subject name: Anatomy
[{'content': 'Aery forming anastomosis around the surgical neck of humerus is a branch of:- \nSelect and explain. \nA. 1st pa of axillary aery, B. 2nd pa of axillary aery, C. 3rd pa of axillary aery, D. Subclan aery', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Aeries forming anastomosis around the surgical neck of humerus are anterior circumflex humeral aeries posterior circumflex humeral aeries Both are branches of 3rd pa of axillary aery.', 'role': 'assistant'}]