This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Shoulder and arm injuries, Subject name: Orthopaedics
A 33-year-old rugby player came for follow-up after a first time anterior shoulder dislocation 6 weeks ago. The shoulder has remained reduced. On examination, he has a good range of painless active and passive motion. Which of the following is considered as a dynamic stabilizer of the glenohumeral joint 
Select and explain. 
A. Glenoid fossa, B. Coracohumeral ligament, C. Anteroinferior labral complex, D. Subscapularis muscle
D: Subscapularis muscle
Answer: D: Subscapularis muscle 
Explanation: The periscapular musculature stabilizes the glenohumeral joint during and throughout its full range of motion, thus acting as dynamic restraints. The other answers listed are static restraints.