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: Pharmacology
[{'content': 'In the treatment of hypothyroidism, thyroxine is preferred over liothyronine because of thyroxine: \nSelect and explain. \nA. Is faster acting, B. Has higher affinity for thyroid hormone receptors, C. Has a longer half life, D. Can be made more easily by recombinant DNA technology', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Liothyronine (T3) as compared to thyroxine (T4) is:\n\nFast acting\nMore potent\nShort half-life\n\nAn indication of liothyronine includes myxedema coma and for most of the indications, thyroxine is used because it has a long half-life thus can be used less frequently than T3.', 'role': 'assistant'}]