This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
A person is able to abduct his arm, internally rotate it, place the back of hand on the lumbosacral joint, but is not able to lift it from back. What is the etiology 
Select and explain. 
A. Subsacapularis tendon tear, B. Teres major tendon tear, C. Long head of biceps tendon tear, D. Acromioclavicular joint dislocation
A: Subsacapularis tendon tear
Answer: A: Subsacapularis tendon tear 
Explanation: Refer Apleys Ohopaedics 9th p 345 The test described in the question is lift of test which is a test for subsacapularis muscle