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: Biochemistry
[{'content': 'Vitamin also acting as hormonea) Vitamin Db) Vitamin Ac) Vitamin B1d) Vitamin C \nSelect and explain. \nA. ac, B. a, C. ab, D. bc', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Vitamin A and vitamin D are actually hormones which act on intracellular receptors (steroid receptor family).', 'role': 'assistant'}]