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
Avascular necrosis of head of femur occurs commonly at: 
Select and explain. 
A. Transcervical region, B. Trochanteric region, C. Subcapital region, D. Subchondral region
C: Subcapital region
Answer: C: Subcapital region 
Explanation: C i.e. Subcapital