The Phenomenon of "Pop Out" Refers to the

The phenomenon of "pop out" refers to the

A) increased allocation of attention to three-dimensional, as opposed to two-dimensional, stimuli, as in pop-up books or 3D cinema.
B) distinguishing feature of a sought-after item that makes it sufficiently different from all distracters.
C) unexpected perception of a sought-after item that suddenly "pops out" in the visual attention field.
D) perception of unusually vivid images in the course of daydreaming.