True about Torus mandibularis:
Present above the mylohyoid line
Present below the mylohyoid line
No definite location is there
Present at lingual surface of anterior mandible
Torus mandibularis is seen on the lingual surface of the mandible and it occurs above the mylohyoid line, usually opposite the bicuspid teeth.
 
Ref: Shafer's textbook of oral pathology 7th edition page 159