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
Banka's lesion involves the of the glenoid labrum. 
Select and explain. 
A. Anterior lip, B. Superior lip, C. Antero-superior lip, D. Antero-inferior lip
D: Antero-inferior lip
Answer: D: Antero-inferior lip 
Explanation: D i.e. Antero-inferior lip