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
Which of the following may least be used as an abutment: 
Select and explain. 
A. Tooth with minimum crown, B. Tooth with short tapered crown and conical roots, C. Rotated and tipped tooth, D. Pulp treated tooth
B: Tooth with short tapered crown and conical roots
Answer: B: Tooth with short tapered crown and conical roots 
Explanation: None