This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Abdomen and pelvis, Subject name: Anatomy
The internal oblique muscle is inseed into all of the following structures except ? 
Select and explain. 
A. xiphoid process, B. iliac crest, C. pubic crest, D. linea Alba
B: iliac crest
Answer: B: iliac crest 
Explanation: Inseion of internal oblique muscle - 1. The uppermost fibres are inseed directly into the lower three or four ribs and their cailages. 2. The greater pa of the muscle ends in an aponeurosis through which it is inseed into the seventh, eighth and ninth costal cailages, the xiphoid process, the linea alba, the pubic crest and the pectineal line of the pubis . Ref : B D Chaurasia's Human Anatomy , seventh edition , volume 2 , pg. no., 223.