This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ohopaedics Q Bank, Subject name: Orthopaedics
[{'content': 'Which of the rotator muscle was not given its due impoance and was called Forgotten muscle of rotator cuff ? \nSelect and explain. \nA. Subscapularis, B. Supraspinatus, C. Infraspinatus, D. Teres minor', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Subscapularis-:"forgotten muscle\'\' of rotator cuff- Internal rotator of the shoulder Difficult to pick up in MRI Diagnostic test done-lift off, belly press, Gerber test Nerve supply: Upper and lower subscapular nerves from posterior chord of brachial plexus', 'role': 'assistant'}]