Regarding the shoulder joint:

• A. the glenoid labrum is the most important stabilising factor
• B. the strong capsule is reinforced by tight glenohumeral ligaments
• C. the coracoacromial arch prevents the humeral head from displacing
• D. the long head of triceps gives stability to the abducted humerus
• E. the pull of teres minor stabilises the abducted humerus