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': 'A 60 year old male patient wants rehabilitation of missing teeth. Intra-oral examination reveals upper and lower edentulous arches. During the denture fabrication, the flask was filled with a gypsum product. Which gypsum product was filled? \nSelect and explain. \nA. Type I, B. Type II, C. Type III, D. Type IV', 'role': 'user'}, {'content': 'Answer: B \nExplanation: This model plaster or laboratory Type II plaster is now used principally to fill a flask used in denture construction when\xa0setting expansion is not critical and the strength is adequate according to the limits cited in the ADA specification or ISO\xa0standard.\xa0It\xa0is\xa0usually\xa0marketed\xa0in\xa0the\xa0natural\xa0white\xa0color, thus, contrasting with stones, which are generally colored.\nReference: Philips’ Dental Material, pg- 190', 'role': 'assistant'}]