This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Lower limb, Subject name: Anatomy
Hunterian perforator is at 
Select and explain. 
A. Upper thigh, B. Mid thigh, C. Lower thigh, D. Knee
B: Mid thigh
Answer: B: Mid thigh 
Explanation: Ref: BD Chaurasia Human Anatomy vol 2 pg 125,127.