This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General physiology, Subject name: Physiology
[{'content': 'Most peptide and protein hormones are synthesized as \nSelect and explain. \nA. A secretagogue, B. A pleiotropic hormone, C. Proopiomelanocoin (POMC), D. A preprohormone', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Preprohormones are the gene products for most peptide and protein hormones. These are rapidly cleaved to form prohormones. POMC and propressophysin are two examples of specific prohormones.Ref: Guyton; 13th edition', 'role': 'assistant'}]