Comparing Very Similar Mental Images Takes Longer Than Comparing Very

Comparing very similar mental images takes longer than comparing very different mental images.This phenomenon suggests that:

A) feature detectors produce conflicting signals for similar images,leading to confusion and longer reaction times.
B) large differences provide much more detail to guide the comparison process,thus reducing reaction time.
C) mental comparison processes cause discrimination problems similar to those encountered when making perceptual discriminations.
D) small differences are feature-poor and require that the person make more inferences before reacting.