Anterior periapical image receptors are placed ______________ in the oral cavity. Posterior periapical image receptors are placed _____________ in the oral cavity. a. vertically; horizontally b....

Anterior periapical image receptors are placed ______________ in the oral cavity. Posterior periapical image receptors are placed _____________ in the oral cavity.

a. vertically; horizontally

b. horizontally; vertically

c. vertically; vertically

d. horizontally; horizontally