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
Basal bone is 
Select and explain. 
A. That part of the bone embracing apices of root of teeth, B. Lower border of the mandible, C. Ramus of the mandible, D. That part of the bone containing teeth
A: That part of the bone embracing apices of root of teeth
Answer: A: That part of the bone embracing apices of root of teeth 
Explanation: None