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': 'When a partial denture is replacing one entire half of dentition and retentive areas are present adjacent to each other, which of the following clasps are indicated \nSelect and explain. \nA. Multiple clasp, B. Embrasure clasp, C. Hairpin clasp, D. Onlay clasp', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The multiple clasp is simply two opposing circumferential clasps joined at the terminal end of the two reciprocal arms. It is used when additional retention and stabilization are needed, usually on tooth supported partial dentures. It may be used for multiple clasping in instances, in which the partial denture replaces an entire half of the dental arch.\nIt may be used rather than an embrasure clasp, when the only available retentive areas are adjacent to each other.', 'role': 'assistant'}]