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': 'Muscles forming boundaries of carotid triangle are all except \nSelect and explain. \nA. Posterior belly of digastric, B. Superior belly of omohyoid, C. Inferior belly of omohyoid, D. Sternocleidomastoid', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Boundaries of carotid triangle are :\n\nAnterosuperiorly – posterior belly of digastric.\nAnteroinferiorly – superior belly of omohyoid.\nPosteriorly – sternocleidomastoid muscle.', 'role': 'assistant'}]