This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Upper limb, Subject name: Anatomy
[{'content': 'Boundaries of upper triangular space include all except \nSelect and explain. \nA. Teres minor, B. Teres major, C. Subscapularis, D. Triceps', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Boundaries of upper triangular space is formed by : Superior- Inferior border of teres minor Lateral- Medial border of the long head of triceps brachii Inferior- Superior border of teres major REF: BD Chaurasia 7th edition Page no: 75. Figure :5.14,page no:69-Textbook of anatomy- upper limb & thorax - vishram Singh, 2nd edition', 'role': 'assistant'}]