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': 'Boundaries of quadrilateral space include all except - \nSelect and explain. \nA. Teres major, B. Long head of triceps, C. Neck of humerus, D. Deltoid', 'role': 'user'}, {'content': 'Answer: D \nExplanation: -\xa0\xa0\xa0\xa0\xa0\xa0\xa0 Boundaries of quadrilateral space\n\n\xa0 \xa0Superior- Sub scapularis, Shoulder joint capsule and teres minor\n\xa0 \xa0Medial- Long head of triceps\n\xa0 \xa0Lateral- Surgical neck of humerus\n\xa0 \xa0Inferior- Teres major\n\xa0 \xa0Content- axillary nerve and posterior circumflex humeral vessels.', 'role': 'assistant'}]