If Object Recognition Is Necessary for Matching Correspondence, Then Random-Dot

Multiple Choice

If object recognition is necessary for matching correspondence, then random-dot stereograms will not result in a 3D perception.However, if correspondence matching occurs before object recognition, then it should be possible for people to extract binocular depth cues from random-dot stereograms.What has research found?

A) Random-dot stereograms can be detected only while in motion.
B) People can extract binocular depth cues from random-dot stereogram.
C) People cannot extract binocular depth cues from random-dot stereogram.
D) Random-dot stereograms cannot produce 3D perception in the absence of monocular depth cues.