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': 'Rupture of supraspinatus manifests as - \nSelect and explain. \nA. Painful movements, B. Flat shoulders, C. Difficulty in initiation of abduction, D. Difficulty in abduction after 90°', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Supraspinatus is responsible for shoulder abduction for the first 15 degrees. If it is torn completely, the initiation of abduction is impossible. Passive abduction upto 15 degrees allows other muscles to take over for further abduction.', 'role': 'assistant'}]