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
Retruded tongue position in an edentulous patient results in 
Select and explain. 
A. Good peripheral seal, B. Over extended impression, C. Under extended impression, D. Increased stability of lower denture
B: Over extended impression
Answer: B: Over extended impression 
Explanation: None