Which of the following is not true, regarding abutment selection for overdenture  fabrication?
Abutment should have healthy periodontal tissues
If bone loss is present, teeth should not be selected as overdenture abutments
A circumferential band of attached gingiva should be present
If a tooth has grade III mobility, it should not be selected as overdenture abutment
If mild to moderate bone loss is present, change in crown:root ratio can make the tooth suitable as an overdenture abutment.