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: Orthopaedics
All of the following are associated with supracondylar fracture of humerus, except- 
Select and explain. 
A. It is uncommon after 15 yrs of age, B. Extension type fracture is more common than the flexion type, C. Cubitus varus deformity commonly results following malunion, D. Ulnar nerve is most commonly involved
D: Ulnar nerve is most commonly involved
Answer: D: Ulnar nerve is most commonly involved 
Explanation: Median nerve, especially anterior interosseous branch, is injured most commonly.