Radiographic diagnosis of bilateral expansible radio opaque areas in the canine premolar region of the mandible is.. Tours mandibularis

Radiographic diagnosis of bilateral expansible radio opaque areas in the canine premolar region of the mandible is: 

a. Hematoma.

b. Remaining roots.

c. Tours mandibularis. ***

d. Internal oplique ridge.

e. Genial tubercle.