This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hernia and abdominal wall, Subject name: Surgery
Spigelian 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: Hernia through Spigelian fascia. Located at Infra umbilical region (below arcuate line)