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': 'Grynfeltt triangle not bounded by \nSelect and explain. \nA. 12th rib, B. Paraspinal muscles, C. Internal oblique muscle, D. External oblique muscle', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Lumbar hernias- Hernias through the superior lumbar triangle (Grynfeltt triangle) are more common and bounded by the 12th rib, paraspinal muscles, and internal oblique muscle. Inferior Lumbar / Petit triangle- bounded by the iliac crest, latissimus dorsi muscle, and external oblique muscle.', 'role': 'assistant'}]