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
Tube (Cylinder) cast is applied for the fracture of - 
Select and explain. 
A. Shoulder, B. Hip, C. Pelvis, D. Knee
D: Knee
Answer: D: Knee 
Explanation: Cylinder cast in full extension is given for undisplaced patella fractures.