This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cell Physiology and Intercellular Connections, Subject name: Physiology
[{'content': 'A highest level of zinc is found in? \nSelect and explain. \nA. Prostate, B. Skin, C. Hair, D. Bone', 'role': 'user'}, {'content': 'Answer: A \nExplanation: ANSWER: (A) ProstateREF: Trace element analysis in biological specimens by R. F. M. Herber, Markus Stoeppler page 551TissueMean concentration of ZincAdrenal43.2Bone94Brain39Heart87Skin25Prostate243Muscle200Liver169Kidney188', 'role': 'assistant'}]