This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrine System, Subject name: Physiology
[{'content': 'Which of the following hormone is not a protein derivative? \nSelect and explain. \nA. Growth hormone, B. Insulin, C. Glucagon, D. Thyroxine', 'role': 'user'}, {'content': 'Answer: D \nExplanation: PROTEIN DERIVATIVES STEROID DERIVATIVES TYROSINE DERIVATIVES GROWTH HORMONE COISOL THYROID HORMONES INSULIN ALDOSTERONE CATECHOLAMINES GLUCAGON SEX STEROIDS', 'role': 'assistant'}]