In the context of shoulder pathology, where can internal and external impingement syndromes occur, and which structures are primarily affected?
A) External impingement: Primary - Hooked acromion, osteophytes; Secondary - Multidirectional instability due to joint laxity; Internal impingement: Posterior superior (junction of supraspinatus and infraspinatus)
B) External impingement: Primary - Glenoid labrum tear, secondary - Supraspinatus injury; Internal impingement: Anterior superior (subscapularis)
C) External impingement: Primary - Subacromial space, secondary - Anterior capsule laxity; Internal impingement: Posterior inferior (teres minor)
D) External impingement: Primary - Biceps tendonitis, secondary - Glenohumeral instability; Internal impingement: Posterior superior (junction of supraspinatus and infraspinatus)