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
Non arcon instruments gained considerable popularity in complete denture prosthodontics because upper and lower members are 
Select and explain. 
A. Loosely attached, B. Rigidly attached, C. Medially attached, D. Inferiorly attached
B: Rigidly attached
Answer: B: Rigidly attached 
Explanation: None