This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Anatomy
[{'content': 'Which structure(s) passes behind the inguinal ligament: \nSelect and explain. \nA. Femoral branch of genitofemoral nerve, B. Femoral vein, C. Psoas major, D. All', 'role': 'user'}, {'content': 'Answer: D \nExplanation: . Femoral branch of genitofemoral nerve; B i.e. Femoral vein ; C i.e. Psoas major Ref: Gray&;s anatomy text book of anatomy BD chaurasia 21st Ed.', 'role': 'assistant'}]