This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
[{'content': 'The suboccipital triangle is bounded superolaterally by: \nSelect and explain. \nA. Rectus capitis posterior major muscle, B. Rectus capitis posterior minor muscle, C. Superior oblique muscle, D. Inferior oblique muscle', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ref: BDC -194\nBoundaries\nSuperomedially: Rectus capitis posterior major muscle supplemented by the rectus\ncapitis posterior minor.\n\nSuperolaterally: Superior oblique muscle.\n\nInferiorly: Inferior oblique muscle.\n\nRoof\nMedially: Dense fibrous tissue covered by the semispinalis capitis.\nLaterally: Longissimus capitis and occasionally the splenius capitis.\n\nFloor\n1. Posterior arch of atlas.\n2. Posterior atlanto-occipital membrane\n\nContents\n1. Third part of vertebral artery.\n2. Dorsal ramus of nerve C1 – suboccipital nerve.\n3. Suboccipital plexus of veins.', 'role': 'assistant'}]