What is the point of entry for correctly exposing a posterior mandible topographical occlusal radiograph? a. The middle of the chin b. A point 2 in. (5 cm) back from the tip of the chin c. A point on...

What is the point of entry for correctly exposing a posterior mandible topographical occlusal radiograph?

a. The middle of the chin

b. A point 2 in. (5 cm) back from the tip of the chin

c. A point on the ala–tragus line below the outer cantus of the eye

d. A point on the inferior border of the mandible directly below the second mandibular premolar