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: Unknown
[{'content': 'Which of the following materials used to make jewelry will commonly cause contact dermatitis in sensitive individuals ? \nSelect and explain. \nA. Sapphire, B. Silver, C. Gold, D. Nickel/chromium', 'role': 'user'}, {'content': 'Answer: D \nExplanation: - Nickel is commonly a component of an alloy used to make cheaper jewelry as well as buckles and snaps. -Individuals often develop a contact dermatitis from contact with this alloy.', 'role': 'assistant'}]