Interchanging green- and blue-light–sensitive films between calcium tungstate and rare earth screens would produce:

a. increased image sharpness.
b. faster film speeds.
c. latent images with less radiation.
d. undiagnostic radiographic images.

d. Inappropriately interchanging green- or blue-light–sensitive films between calcium tungstate and rare earth screens produces undiagnostic radiographic images.