This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Upper Extremity, Subject name: Anatomy
[{'content': 'Muscle attached to medial border of scapula is- \nSelect and explain. \nA. Rhomboidus Major, B. Teres Major, C. Deltoid, D. Infraspinatus', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Rhomboidus Major * Lateral border of scapula (posteriorly) : Origins of teres minor and teres major.* Medial border of scapula : (i) Anteriorly : Insertion of serratus anterior; (ii) Posteriorly : Insertions of levator scapulae, rhomboideus major and minor.", 'role': 'assistant'}]