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
An abutment tooth exhibiting an unfavorable survey line should: 
Select and explain. 
A. Be restored, B. Have unfavorable contours improved, C. Be by-passed in the frame work design, D. Receive only a rest and not to be clasped
B: Have unfavorable contours improved
Answer: B: Have unfavorable contours improved 
Explanation: None