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
In heat cure denture base acrylic resins the
monomer is: 
Select and explain. 
A. Methacrylate, B. Ethylmethacrylate, C. Methyl ethyl methacrylate, D. Polymethylmethacrylate
A: Methacrylate
Answer: A: Methacrylate 
Explanation: None