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: Surgery
[{'content': 'Patient is able to abduct, internally rotate and take his arm upto lumbosacral spine but not able to lift off. What is the probable diagnosis \nSelect and explain. \nA. Subscapularis tear, B. Teres major tear, C. Long head of biceps tear, D. Acromioclavicular joint dislocation', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e. Subscapularis tear', 'role': 'assistant'}]