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
[{'content': 'Superficial inguinal ring is deficient of \nSelect and explain. \nA. External oblique abdominis, B. Internal oblique abdominis, C. External oblique aponeurosis, D. Internal oblique aponeurosis', 'role': 'user'}, {'content': 'Answer: C \nExplanation: It is a triangular opening that forms the exit of the inguinal canal, which houses the ilioinguinal nerve, the genital branch of the genitofemoral nerve, and the spermatic cord (in men) or the round ligament (in women). At the other end of the canal, the deep inguinal ring forms the entrance. ref - BDC 6e vol2', 'role': 'assistant'}]