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
A dimensionally accurate reproduction of a part of the oral cavity or extraoral facial structures that is produced in a durable hard material? 
Select and explain. 
A. Model, B. Die, C. Cast, D. impression
C: Cast
Answer: C: Cast 
Explanation: Cast-Positive dimensionally accurate replica of a part of oral cavity or extraoral facial structures in a durable hard dental material
Model-Positive replica of teeth, soft tissues, and related structures can be used for the construction of orthodontic and prosthetic appliances and mostly used as a diagnostic aid/display purpose/patient education
Die-Positive dimensionally accurate replica of prepared tooth