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
[{'content': 'Artery not involved in Vascular anastemosis around Acromian \nSelect and explain. \nA. Thyrocervical Trunk, B. Thoracoacromial trunk, C. Anterior circumflex humeral artery, D. Posterior circumflex humeral artery', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Acromial Branch of Thyrocervical Trunk (Branch of 1st part of Subclavian artery).\nAcromial Branch of Thoracoacromial trunk (Branch of 2nd part of Axillary artery).\nAcromial branch of\xa0 posterior circumflex humeral artery form anastomosis around Acromian.', 'role': 'assistant'}]