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
Following statement regarding dislocation of shoulder are true except; 
Select and explain. 
A. Head of humerus usually dislocates forward from shoulder joint, B. Injury is produced by forced extension & external rotation of abducted arm, C. In posterior dislocation, appearance of shoulder is not normal, D. None of the above
C: In posterior dislocation, appearance of shoulder is not normal
Answer: C: In posterior dislocation, appearance of shoulder is not normal 
Explanation: C i.e. In posterior dislocation, appearance of shoulder is not normal