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
Spigelia hernia is a type of hernia occurring at: 
Select and explain. 
A. Medial border of rectus abdominis, B. Lateral border of rectus abdominis, C. Lumbar region, D. Femoral canal
B: Lateral border of rectus abdominis
Answer: B: Lateral border of rectus abdominis 
Explanation: Spigelian hernia occurs through the linear semilunaris which corresponds to the lateral margin of the rectus abdominis.