During Lasik Monovision Correction,one Eye Is Corrected for near Vision

During Lasik monovision correction,one eye is corrected for near vision and one eye is corrected for distance vision.It is possible for an individual to see both near and far away because ___________.

A) the brain automatically figures out which eye to rely on most,depending on whether near vision would distance vision is necessary
B) human beings only rely on one eye at any given time,a phenomenon known as monocular vision
C) binocular vision is seldom used and human beings rely on one eye,his or her dominant eye,the majority of the time
D) of the photoreceptors-cones are located in the left eye and rods are located in the right eye and it is these photoreceptors that help to determine distance