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
Impression compound is characterized by all the following except: 
Select and explain. 
A. Warps at room temperature, B. Is a thermoset material, C. Shows increased flow when kneaded with water, D. Low coefficient of thermal conductivity
B: Is a thermoset material
Answer: B: Is a thermoset material 
Explanation: Impression compound is not a thermoset material.