This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Eczema and related disorders, Subject name: Dental
[{'content': 'Berloque dermatitis is due to contact with \nSelect and explain. \nA. Metals, B. Cosmetics, C. Food, D. Plants', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Berloque dermatitis By 5-methoxypsoralen (bergapten) in bergamot oil contained in perfumes. Term arose from the method of applying perfume to the sides of the neck and upper chest in a pendant shape (berloque is French for pendant). Wavelengths of UV light above 320 nm and hot humid conditions our absorption. Deep-brown pigmentation follows the pattern formed by the trickle of the droplets of perfume over the skin from their points of application.', 'role': 'assistant'}]