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: Dental
[{'content': 'Ammonia treated gold foil is also known as: \nSelect and explain. \nA. Cohesive foil, B. Noncohesive foil, C. Corrugated foil, D. Non corrugated foil', 'role': 'user'}, {'content': 'Answer: B \nExplanation: To make gold pellets, a piece of foil is placed in the palm and each end is folded towards the center.\xa0\nThis incompletely formed pellet is transferred between thumb and index finger to form pellet. Rolled pellets can be stored in a gold foil box with cotton dipped in 18% ammonia (to prevent the formation of oxide layer on the pellets).\n\nNisha Garg, Amit Garg. Textbook of Operative Dentistry.\xa0 Edition 3. Page: 373', 'role': 'assistant'}]